Summer baking doesn’t get much better than a homemade Blueberry Crumble Pie fresh out of the oven, filling your kitchen with the smell of warm berries and buttery oats.

This pie has everything you want in a summer dessert: a flaky, golden crust on the bottom, a thick and jammy blueberry filling bursting with flavor, and a crisp brown sugar oat crumble piled on top.

It skips the fussiness of a lattice top entirely, which makes it perfect for bakers at any skill level.

You get all the satisfaction of a classic pie with half the effort, and the crumble topping adds a texture you just can’t get from a traditional double-crust pie.

Quick Recipe Summary
Prep Time	25 minutes (plus 1 hour chilling)
Cook Time	55 minutes
Total Time	1 hour 20 minutes (plus chilling)
Servings	8 slices
Difficulty Level	Easy to Medium

If you love classic fruit pies, you’ll also want to check out this Blueberry Lemon Cake Recipe for another blueberry-forward bake that delivers big flavor.

Table of Contents

Why You’ll Love This Blueberry Crumble Pie

This pie is genuinely one of the most crowd-pleasing desserts you can bring to a summer gathering.

The crumble topping does away with the need to roll out a second crust, saving you time and effort while delivering something even more satisfying, texturally speaking.

The filling uses fresh (or frozen) blueberries thickened with cornstarch, which means it sets up beautifully for clean slices instead of a runny mess.

A touch of lemon juice and lemon zest in the filling brightens everything up and keeps the flavors from going flat or overly sweet.

The brown sugar oat crumble on top bakes into golden, crunchy clusters that contrast perfectly with the soft, juicy berries underneath.

It’s equally at home at a Fourth of July cookout, a Thanksgiving table, or just a quiet Sunday afternoon when you feel like baking something special.

Here’s a quick look at why this recipe works every single time:

Fresh or frozen blueberries both work, making this a year-round option
Cornstarch thickens the filling so it sets properly without turning watery
Blind baking the crust ensures a crisp, flaky base that holds up under the juicy filling
Cold butter in the crumble creates those irresistible crunchy clusters on top
Lemon zest and juice brighten the filling and balance the sweetness
No lattice weaving required, making this approachable for beginner pie bakers
Pairs beautifully with vanilla ice cream or a dollop of whipped cream

Ingredients

Making this pie from scratch uses simple pantry and fresh-market ingredients.

The key to getting the crumble right is keeping the butter cold throughout, and the filling thick comes down to the correct cornstarch-to-berry ratio.

Here’s everything you’ll need:

For the Pie Crust:

1 1/4 cups all-purpose flour
1/2 teaspoon salt
1/2 teaspoon granulated sugar
1/2 cup (1 stick) cold unsalted butter, cut into small cubes
3 to 4 tablespoons ice-cold water

For the Blueberry Filling:

6 cups fresh blueberries (or frozen, see tips)
1/2 cup granulated sugar
3 tablespoons cornstarch
1 tablespoon fresh lemon juice
1 teaspoon lemon zest
1/4 teaspoon cinnamon
Pinch of salt

For the Brown Sugar Oat Crumble Topping:

3/4 cup all-purpose flour
1/2 cup packed light brown sugar
1/2 cup old-fashioned rolled oats
1/4 teaspoon cinnamon
1/4 teaspoon salt
6 tablespoons cold unsalted butter, cut into cubes

For the Egg Wash:

1 large egg
1 tablespoon milk

Kitchen Equipment Needed

You don’t need anything fancy to make this pie, but having the right tools on hand makes the process much smoother.

Here’s what to gather before you start:

9-inch pie dish (standard or deep dish)
Large mixing bowls (at least 2)
Pastry cutter or food processor (for the crust and crumble)
Rolling pin
Measuring cups and measuring spoons
Small mixing bowl (for egg wash)
Pastry brush (for egg wash)
Rimmed baking sheet (to catch drips during baking)
Wire cooling rack
Plastic wrap
Aluminum foil (for tenting the pie)
Pie shield or pie crust protector (optional but helpful)
Pie weights or dried beans (for blind baking)
Sharp knife or pastry wheel (for trimming crust)

Step-by-Step Instructions: How to Make Blueberry Crumble Pie

Step 1: Make the Pie Dough

In a large mixing bowl, whisk together 1 1/4 cups all-purpose flour, 1/2 teaspoon salt, and 1/2 teaspoon granulated sugar.
Add 1/2 cup cold cubed unsalted butter to the flour mixture.
Using a pastry cutter or your fingertips, cut the butter into the flour until the mixture resembles coarse crumbs with some pea-sized pieces of butter still visible. Do not overwork it; those butter pieces are what create flakiness.
Drizzle in 3 tablespoons of ice-cold water, one tablespoon at a time, gently tossing the mixture with a fork after each addition.
Add the final tablespoon of water only if the dough still looks dry. You want the dough to just come together when you press a small handful; it should not feel wet or sticky.
Turn the dough out onto a lightly floured surface and gently pat it into a flat disc shape. Do not knead it.
Wrap the dough tightly in plastic wrap and refrigerate for at least 1 hour, or up to 2 days. Cold dough is essential for a flaky crust.

Step 2: Make the Brown Sugar Oat Crumble Topping

In a medium bowl, combine 3/4 cup all-purpose flour, 1/2 cup packed light brown sugar, 1/2 cup old-fashioned rolled oats, 1/4 teaspoon cinnamon, and 1/4 teaspoon salt.
Stir these dry ingredients together until well mixed.
Add 6 tablespoons cold cubed unsalted butter to the bowl.
Using your fingertips or a pastry cutter, work the butter into the mixture until it forms irregular clumps and clusters, ranging from pea-sized to small almond-sized pieces. You want some variation in texture for a more interesting crumble.
Do not overwork the topping; stop mixing as soon as it looks crumbly and holds together when you squeeze a small handful.
Cover the bowl and refrigerate the crumble topping while you prepare the filling. Cold topping bakes up crunchier.

Step 3: Prepare the Blueberry Filling

Rinse 6 cups of fresh blueberries and pat them dry with paper towels. Remove any stems or damaged berries.
In a large bowl, combine the blueberries with 1 tablespoon fresh lemon juice and 1 teaspoon lemon zest. Gently stir to coat.
In a separate small bowl, whisk together 1/2 cup granulated sugar, 3 tablespoons cornstarch, 1/4 teaspoon cinnamon, and a pinch of salt.
Pour the sugar and cornstarch mixture over the blueberries and gently fold everything together until the berries are evenly coated. Be gentle to avoid crushing the blueberries.
Set the filling aside while you roll out the crust. The berries will begin releasing a little juice, which is normal.

Step 4: Roll Out and Blind Bake the Pie Crust

Preheat your oven to 375°F (190°C) and position the rack in the center. Place a rimmed baking sheet on the rack below to catch any drips.
Remove the chilled pie dough from the refrigerator and let it sit at room temperature for 5 minutes to make it easier to roll.
On a lightly floured surface, roll the dough out into a circle about 12 inches in diameter, rotating the dough a quarter turn after each roll to keep it even and prevent sticking.
Carefully transfer the rolled dough into your 9-inch pie dish. You can do this by rolling the dough loosely around your rolling pin and then unrolling it over the dish.
Gently press the dough into the bottom and sides of the pie dish, being careful not to stretch it (stretched dough shrinks more during baking).
Trim any excess dough, leaving about a 1-inch overhang. Fold the overhang under itself and crimp the edges using your fingers or a fork for a decorative finish.
Line the inside of the crust with a sheet of parchment paper and fill it with pie weights or dried beans, spreading them evenly to cover the bottom and sides.
Bake the crust for 15 minutes, until the edges just begin to look golden.
Carefully remove the parchment paper and pie weights.
Return the crust to the oven and bake for another 5 to 8 minutes, until the bottom looks dry and is just starting to color. It should not be fully browned at this stage.
Remove the crust from the oven and set it aside to cool slightly while you prepare the egg wash.

Step 5: Add the Egg Wash and Assemble the Pie

In a small bowl, whisk together 1 large egg and 1 tablespoon of milk to make the egg wash.
Using a pastry brush, lightly brush the edges and interior bottom of the blind-baked crust with the egg wash. This creates a seal that helps prevent the crust from becoming soggy.
Pour the prepared blueberry filling into the crust, spreading it into an even layer with a spoon. If the berries have released a lot of liquid in the bowl, use a slotted spoon to transfer them, leaving excess liquid behind.
Remove the crumble topping from the refrigerator. Using your hands, scatter it evenly over the blueberry filling, covering the entire surface. Press the topping down very gently so it stays in place during baking.

Step 6: Bake the Pie

Increase the oven temperature to 400°F (205°C).
Place the assembled pie on the rimmed baking sheet in the oven.
Bake for 20 minutes at 400°F to help the crust get a head start on browning and to sear the bottom before the filling heats through.
Reduce the oven temperature to 350°F (175°C) and continue baking for an additional 30 to 35 minutes, until the crumble topping is deep golden brown and the blueberry filling is visibly bubbling around the edges and through the crumble.
If the crust edges start to look too dark before the pie is done, cover them with a pie shield or strips of aluminum foil.
If the crumble topping darkens too quickly, lay a loose sheet of aluminum foil over the entire top of the pie and continue baking.
The pie is done when the filling bubbles actively (not just around the edges), and the crumble is golden and set.

Step 7: Cool Completely Before Slicing

Remove the pie from the oven and transfer it to a wire cooling rack.
Allow the pie to cool at room temperature for a minimum of 3 hours before slicing. This step is non-negotiable for a filling that sets up properly instead of running out like a soup.
For the cleanest slices, refrigerate the fully cooled pie for an additional 1 to 2 hours before serving. The filling will be even more sliceable when chilled.
Serve at room temperature or slightly warm, topped with a scoop of vanilla ice cream or a spoonful of whipped cream.

Tips for The Best Blueberry Crumble Pie

A few small techniques make a big difference between a good blueberry crumble pie and a truly great one. Keep these in mind from crust to crumble.

Keep everything cold. Cold butter in the crust makes it flaky; cold butter in the crumble makes it crunchy. If your kitchen is warm, chill the mixing bowls too.
Blind bake the crust. Skipping this step with a juicy filling like blueberry almost always leads to a soggy bottom crust. The par-bake gives it a head start.
Use cornstarch, not flour, for the filling. Cornstarch creates a cleaner, glossier set than flour and doesn’t cloud the filling.
Don’t skip the lemon. Fresh lemon juice and zest brighten the whole pie and keep it from tasting flat or one-dimensional.
Resist cutting into the pie too soon. Three hours is the minimum cooling time; the filling is essentially a hot blueberry jam that needs time to set.
Use a baking sheet under the pie. Blueberry filling bubbles over more than you’d expect, and cleaning a burnt oven is nobody’s idea of fun.
Fresh blueberries are best when they’re in season, but good-quality frozen blueberries work well in the off-season. Add an extra tablespoon of cornstarch if using frozen and do not thaw them first.

Serving Suggestions

This pie is a showstopper on its own, but pairing it with the right accompaniments takes the whole dessert experience to another level.

A generous scoop of good vanilla ice cream is the classic and most beloved pairing, with the cold creaminess melting slightly into the warm pie in the best possible way.

Here are some of my favorite ways to serve and enjoy it:

Classic a la mode with a scoop of vanilla ice cream
With freshly whipped cream for a lighter option
A drizzle of lemon curd over the top for an extra citrusy punch
Alongside fresh berries to enhance the blueberry flavor even more
Warm with a cup of coffee or tea for a weekend breakfast treat
Pair a slice with these Strawberry Crepes with Whipped Cream for a summer dessert spread
Follow it up with this Fruit Tart for a full fruit-forward dessert table

Variations of Blueberry Crumble Pie

Once you’re comfortable with the base recipe, there are so many easy ways to customize this pie and make it your own.

The crumble topping and filling are both wonderfully adaptable.

Here are some popular variations to try:

Mixed Berry Crumble Pie: Swap out 2 cups of blueberries for raspberries, blackberries, or sliced strawberries. Use the same amounts of sugar and cornstarch.
Blueberry Peach Crumble Pie: Replace 2 cups of blueberries with 2 cups of peeled, diced fresh peaches for a classic summer flavor combo.
Almond Crumble Topping: Add 1/4 cup of sliced almonds to the crumble mixture before baking for extra crunch and a nutty flavor.
Lemon Blueberry Crumble Pie: Increase the lemon zest to 2 teaspoons and add 1 tablespoon of lemon curd to the filling before baking for a brighter citrus punch.
Gluten-Free Version: Swap all-purpose flour in both the crust and crumble for a 1:1 gluten-free flour blend, and ensure your oats are certified gluten-free.
Vegan Option: Use a vegan butter substitute (cold, solid) in both the crust and crumble, and skip the egg wash or replace it with plant-based milk.
Store-Bought Crust Shortcut: Use a refrigerated pie crust if you’re short on time. Skip the homemade dough but still blind bake it for the best results.

Read Also: Peach Pie Recipe

Storage and Reheating

This pie keeps well for several days, making it a great make-ahead option for parties or holiday gatherings.

Proper storage keeps both the crust and crumble from getting overly soggy.

Follow these storage guidelines:

At room temperature: Cover the pie loosely with foil or plastic wrap and store at room temperature for up to 2 days.
In the refrigerator: Store covered in the fridge for up to 5 days. The crust may soften slightly, but the flavor remains excellent.
In the freezer: Freeze the baked and fully cooled pie by wrapping it tightly in plastic wrap, then a layer of aluminum foil, for up to 3 months. Thaw overnight in the refrigerator.
To reheat individual slices: Place a slice on a baking sheet and warm in a 350°F oven for 10 to 15 minutes until heated through. This revives the crumble’s crunch better than a microwave.
To reheat the whole pie: Tent loosely with foil and warm in a 350°F oven for 20 to 25 minutes.
Avoid microwaving: Microwaving makes the crumble topping chewy and soft instead of crispy. Use the oven whenever possible.

Nutritional Facts

The following is an estimate per serving based on 8 slices. Exact values will vary depending on specific brands and any substitutions made.

Nutrient	Per Serving (1 slice)
Calories	~380 kcal
Total Fat	16g
Saturated Fat	9g
Cholesterol	55mg
Sodium	210mg
Total Carbohydrates	58g
Dietary Fiber	4g
Total Sugars	30g
Protein	4g

Nutritional values are estimates and may vary with ingredient substitutions.

Health Benefits of Key Ingredients

Blueberry Crumble Pie is obviously a dessert, but several of its core ingredients bring real nutritional value to each slice.

Blueberries are genuinely one of the most nutrient-dense fruits you can eat, and they carry their benefits right through baking.

Here’s a closer look at what the key ingredients bring to the table:

Blueberries are rich in antioxidants, particularly anthocyanins, which are linked to reduced inflammation, improved heart health, and cognitive support. They are also a good source of vitamin C, vitamin K, and manganese.
Old-fashioned oats in the crumble topping provide a source of soluble fiber (beta-glucan), which supports healthy cholesterol levels and keeps you feeling satisfied longer.
Lemon juice and zest add vitamin C and a range of plant compounds that support immune function and digestion.
Butter (in moderation) provides fat-soluble vitamins A, D, E, and K2, which support bone health and immune function.
Cinnamon contributes trace minerals and has been studied for its potential role in blood sugar regulation.

Read Also: Blueberry Breakfast Muffins Recipe

FAQs About Blueberry Crumble Pie

1. Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work well in this recipe and are a great option when fresh berries are out of season.

Do not thaw them before using, add an extra tablespoon of cornstarch to the filling, and bake the pie about 10 minutes longer than the recipe states.

2. Why is my blueberry pie filling runny?

A runny filling is almost always caused by one of two things: not enough cornstarch, or not cooling the pie long enough before slicing.

Make sure you measure the cornstarch accurately and allow the pie to cool for a full 3 hours (or longer) before cutting into it.

3. Do I really need to blind bake the crust?

Yes, for this particular pie, blind baking is strongly recommended.

The blueberry filling is juicy, and pouring it into an unbaked crust almost always results in a soggy, undercooked bottom.

The short par-bake gives the crust a head start and creates a much better texture in the final pie.

4. Can I make this pie ahead of time?

Absolutely. You can make the pie dough and crumble topping up to 2 days ahead and store them separately in the refrigerator.

You can also bake the full pie a day in advance and store it covered at room temperature or in the fridge.

Reheat gently in the oven before serving if you prefer it warm.

5. How do I prevent the crumble topping from burning?

Keep an eye on the pie during the last 15 to 20 minutes of baking, and if the crumble is darkening too quickly, lay a loose sheet of aluminum foil over the top.

You can also lower the oven temperature by 25°F if your oven tends to run hot.

The filling should be bubbling before you pull the pie from the oven, regardless of how the top looks.

Conclusion

This Blueberry Crumble Pie is everything a summer dessert should be: deeply flavorful, comforting, and just impressive enough to feel special without being stressful to make.

The combination of jammy blueberry filling, flaky bottom crust, and golden oat crumble is one of those truly timeless flavor pairings that never gets old.

If you try this recipe, I’d love to hear how it turned out. Drop a comment below with your experience, your favorite variations, or who was lucky enough to get the first slice.

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Why You’ll Love This Blueberry Crumble Pie

Ingredients

Kitchen Equipment Needed

Recommended Products for This Recipe

1. Emile Henry Modern Classics Pie Dish

2. OXO Good Grips Pastry Cutter

3. Nordic Ware Naturals Rimmed Baking Sheet

4. Norpro Pie Crust Shield

Step-by-Step Instructions: How to Make Blueberry Crumble Pie

Step 1: Make the Pie Dough

Step 2: Make the Brown Sugar Oat Crumble Topping

Step 3: Prepare the Blueberry Filling

Step 4: Roll Out and Blind Bake the Pie Crust

Step 5: Add the Egg Wash and Assemble the Pie

Step 6: Bake the Pie

Step 7: Cool Completely Before Slicing

Tips for The Best Blueberry Crumble Pie

Serving Suggestions

Variations of Blueberry Crumble Pie

Storage and Reheating

Nutritional Facts

Health Benefits of Key Ingredients

FAQs About Blueberry Crumble Pie

1. Can I use frozen blueberries instead of fresh?

2. Why is my blueberry pie filling runny?

3. Do I really need to blind bake the crust?

4. Can I make this pie ahead of time?

5. How do I prevent the crumble topping from burning?

Blueberry Crumble Pie

Ingredients

Equipment

Method

Nutrition

Notes

Private Notes

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Conclusion

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