Lemon Poppy Seed Cake
This lemon poppy seed cake is delicate, tender, and subtly crunchy from the poppy seeds — one of those understated spring treats that everyone ends up loving. Made with real lemon zest and fresh juice from three whole lemons, it delivers a bright, vibrant citrus flavor in every slice. Sour cream keeps the crumb incredibly moist for days, while a simple two-ingredient sweet lemon glaze poured over the warm cake creates an irresistible crackly, shiny finish. Easy enough for a weekday bake and impressive enough for any gathering.
Equipment
- 9x5 inch loaf pan Standard size; a 10-cup bundt pan can also be used
- Two large mixing bowls One for dry ingredients, one for wet
- Electric hand mixer or stand mixer A sturdy whisk can be used instead
- Rubber spatula For folding in the dry ingredients
- Microplane or lemon zester For zesting lemons before juicing
- Citrus juicer For extracting fresh lemon juice
- Measuring cups and measuring spoons
- Cooling rack For cooling cake after baking
- Parchment paper Used to line the pan and create a sling for easy removal
- Small bowl and whisk For mixing the lemon glaze
Ingredients
For the Cake
- 2 cups all-purpose flour 250g; spoon into measuring cup and level off — do not scoop
- 2 tablespoons poppy seeds
- 2 teaspoons baking powder
- ¼ teaspoon baking soda
- ½ teaspoon salt
- ¾ cup unsalted butter 170g; softened to room temperature
- 1½ cups granulated sugar 300g
- 3 large eggs at room temperature
- 3 lemons, zested about 3 tablespoons of zest
- ¼ cup fresh lemon juice 60ml; from the zested lemons
- 1 teaspoon vanilla extract
- ¾ cup sour cream 180ml; at room temperature
For the Lemon Glaze
- 1½ cups powdered sugar 180g; sift if lumpy
- 3-4 tablespoons fresh lemon juice start with 3 tablespoons and add more to reach desired consistency
Instructions
- Preheat oven to 350°F (175°C). Grease a 9x5 inch loaf pan, line with a parchment paper sling, and set aside.
- Zest all 3 lemons to get about 3 tablespoons of zest, then cut and juice them. Set the zest and juice aside separately.
- In a large bowl, whisk together the flour, poppy seeds, baking powder, baking soda, and salt for 30 seconds until combined. Set aside.
- In a second large bowl, beat the softened butter and granulated sugar with an electric mixer on medium-high speed for 3–4 minutes, scraping the bowl halfway through, until the mixture is pale, fluffy, and light.
- Add the eggs one at a time, beating 20 seconds after each addition, then mix in the lemon zest, ¼ cup lemon juice, and vanilla extract on low speed until just combined.
- Add the sour cream and mix on low speed or fold in with a spatula until fully incorporated into the batter.
- Add the dry ingredient mixture in two batches, folding gently with a rubber spatula just until the last streak of flour disappears — do not overmix.
- Pour batter into the prepared pan, smooth the top, and tap the pan twice on the counter. Bake on the center rack for 55–60 minutes, tenting loosely with foil during the last 10–15 minutes if the top is browning too quickly, until a toothpick inserted in the center comes out clean.
- Cool the cake in the pan on a rack for 15 minutes, then lift it out using the parchment sling and let it cool on the rack for another 10–15 minutes until just warm.
- Whisk together the powdered sugar and 3 tablespoons of fresh lemon juice in a small bowl until completely smooth; add the remaining tablespoon of juice if the glaze is too thick to pour.
- Place the warm cake over parchment to catch drips, pour the glaze evenly over the top, and let it set for 10–15 minutes before slicing with a serrated knife.
Notes
- Room temperature ingredients are essential: Cold butter, eggs, or sour cream can cause the batter to look curdled and result in an uneven texture. Set everything out 45 minutes before baking.
- Measure flour correctly: Spoon flour into your measuring cup and level it off with a knife. Scooping directly from the bag can pack in up to 20% extra flour, making the cake dry and dense.
- Do not skip the creaming time: Beating butter and sugar for a full 3–4 minutes creates air that gives this cake its light, tender crumb. Set a timer and let the mixer run.
- Zest before you juice: It is much easier to zest a whole lemon than a cut one. Always zest your lemons first, then cut and juice them.
- Do not overmix after adding flour: Fold gently and stop as soon as no flour streaks remain. Overmixing develops gluten and produces a tough, rubbery cake.
- Glaze the cake while still warm: A warm cake absorbs just enough glaze to stay extra moist, while a cold cake lets the glaze sit entirely on the surface without soaking in.
- Sour cream substitute: Full-fat plain Greek yogurt works as a 1:1 substitute for sour cream in this recipe with very similar results.
- Storage: Store covered at room temperature for up to 3 days, or refrigerated in an airtight container for up to 6 days. Let refrigerated cake come to room temperature before serving.
- Freezing: The unglazed baked cake can be wrapped tightly and frozen for up to 3 months. Thaw overnight in the refrigerator and add the glaze before serving.
- Bundt pan variation: Pour batter into a greased and floured 10-cup bundt pan and bake at 350°F for 45–50 minutes. The glaze looks especially beautiful dripping down the ridges.
Nutrition
Serving: 1SliceCalories: 360kcalCarbohydrates: 53gProtein: 4gFat: 15gSaturated Fat: 9gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gCholesterol: 80mgSodium: 160mgPotassium: 75mgFiber: 1gSugar: 36gVitamin A: 8IUVitamin C: 6mgCalcium: 6mgIron: 7mg
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