This best lemon loaf cake is a tender, bakery-style loaf bursting with bright citrus flavor from both fresh lemon zest and juice. Made in one bowl with simple pantry staples, the batter comes together in minutes and bakes into a golden, moist crumb that stays soft for days thanks to full-fat sour cream. A tangy lemon glaze poured over the warm loaf soaks into every layer, making each slice pure citrus perfection. It's the kind of effortless bake that works equally well for morning coffee, afternoon tea, or a light after-dinner dessert.
Large mixing bowl For wet ingredients and final batter
Medium mixing bowl For dry ingredients
Whisk
Rubber spatula or wooden spoon For folding batter
Citrus zester or microplane For finely zesting lemons
Citrus juicer or manual press
Wire cooling rack For cooling and glazing the loaf
Measuring cups and spoons
Parchment paper Leave overhang on sides to lift loaf out
Toothpick or skewer For testing doneness
Fine mesh strainer or sifter For sifting powdered sugar for glaze
Small bowl For preparing the lemon glaze
Aluminum foil (optional) For tenting if top browns too quickly
Ingredients
For the Lemon Loaf
1½cupsall-purpose flour190g
2tspbaking powder
½tspsalt
3large eggsroom temperature
1cupgranulated sugar200g
½cupneutral oil120ml; vegetable or canola oil
½cupfull-fat sour cream120g; room temperature
2tbsplemon zestfrom about 2 large lemons
3tbspfresh lemon juicefrom the zested lemons
1tsppure vanilla extract
For the Lemon Glaze
1cuppowdered sugar120g, sifted
2-3tbspfresh lemon juiceadjust for desired consistency
1tsplemon zestoptional, for extra flavor in glaze
Instructions
Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan, line with parchment paper leaving a 1–2 inch overhang on the long sides, then lightly grease the parchment.
Wash and dry 2 large lemons, then zest them to yield about 2 tablespoons for the batter and 1 teaspoon for the glaze (set aside separately). Cut and juice the lemons, keeping 3 tablespoons for the batter and 2–3 tablespoons for the glaze.
In a medium bowl, whisk together the flour, baking powder, and salt until evenly combined. Set aside.
In a large bowl, combine the sugar and 2 tablespoons of lemon zest; rub together with your fingers for 30 seconds to release the lemon oils. Whisk in the eggs until pale and slightly thickened, then add the oil, sour cream, 3 tablespoons lemon juice, and vanilla extract, whisking until smooth.
Pour the dry ingredients into the wet ingredients and fold gently with a rubber spatula just until the last streaks of flour disappear — do not overmix. The batter should be thick and smooth.
Pour the batter into the prepared pan, smooth the top, and bake on the center rack for 50–60 minutes, until golden and a toothpick inserted into the center comes out clean. Tent loosely with foil if the top browns too quickly.
While the loaf bakes, sift the powdered sugar into a small bowl, then whisk in 2–3 tablespoons of fresh lemon juice (and the reserved zest if using) until smooth and pourable. Adjust consistency with extra lemon juice or powdered sugar as needed.
Let the loaf cool in the pan for 10 minutes, then lift onto a wire rack using the parchment overhang and slowly pour the glaze over the warm loaf. Allow to cool completely for at least 30–45 minutes before slicing.
Notes
Use fresh lemons: Bottled juice lacks the aromatic oils of fresh fruit. Always use both zest and juice for the fullest lemon flavor.
Rub zest into sugar: Don't skip this step — it releases the essential oils and intensifies lemon flavor throughout the batter.
Room temperature ingredients: Pull eggs and sour cream out of the fridge 30 minutes before baking so they incorporate smoothly.
Don't overmix: Fold the batter gently once you add the flour. Overmixing develops gluten and results in a tough, dense loaf.
Oil vs. butter: You can substitute melted unsalted butter 1:1 for the oil, but oil keeps the crumb moister for longer.
Sour cream substitute: Full-fat plain Greek yogurt works as a 1:1 replacement if you don't have sour cream on hand.
Glaze at the right time: Pour the glaze when the loaf has cooled for 10 minutes — warm enough to absorb it, cool enough not to melt it away.
Room temperature storage: Wrap tightly in plastic wrap and store at room temperature for up to 4 days.
Freezer-friendly: Freeze the unglazed loaf (wrapped in plastic then foil) for up to 3 months. Add fresh glaze after thawing overnight.
Variations: Fold in ¾ cup blueberries for a lemon blueberry loaf, or add 2 tablespoons of poppy seeds for a classic lemon poppy seed version.