Name: Lemon Blueberry Cake
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Ingredients: 360 grams 3 cups cake flour; 2 teaspoons baking powder; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 180 ml 3/4 cup buttermilk, at room temperature; 80 ml 1/3 cup lemon juice, freshly squeezed; 226 grams 1 cup unsalted butter, softened (At room temperature); 350 grams 1 3/4 cups granulated sugar; 2 tablespoons lemon zest; 2 teaspoons vanilla extract; 4 large eggs, at room temperature; 2 cups blueberries, preferably fresh (Toss with 2 teaspoons of cake flour to prevent sinking); 112 grams 1/2 cup unsalted butter, softened; 226 grams 8 oz cream cheese, brick-style; 1 teaspoon lemon juice, freshly squeezed; 330-440 grams 3 to 4 cups powdered sugar, sifted (Adjust for desired consistency); 1 tablespoon whipping cream (Add as needed for texture); 168 grams 3/4 cup unsalted butter, softened (for larger frosting) (Adjust based on cake size); 340 grams 12 oz cream cheese, full fat (for larger frosting); 1.5 teaspoons lemon juice, freshly squeezed (for larger frosting); 495-605 grams 4 1/2 to 5 1/2 cups powdered sugar, sifted (for larger frosting) (Adjust for desired consistency)

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How I First Fell for This Lemon Blueberry Cake

The first time I made Lemon Blueberry Cake I was trying to chase down a sunshiny flavor that would cut through a week of heavy soups and stews. The kitchen filled with that lemony perfume as soon as the batter hit the oven, and I remember standing at the counter, spoon in hand, watching the top rise and worrying, as you always do, whether the blueberries would sink. If you like playing with portion sizes, I once turned this into tiny individual treats inspired by a healthy mini lemon blueberry cheesecakes recipe and everyone loved them — same lift of lemon, same burst of blue.

The Ingredient Rolodex

I tell friends the ingredients are very honest: nothing fussy, just good building blocks. For the cake portion I use 3 cups cake flour (360 grams), 2 teaspoons baking powder, 1/2 teaspoon baking soda, and 1/2 teaspoon salt. I always have 3/4 cup buttermilk (180 ml) at room temperature ready, and I mix that with 1/3 cup lemon juice (80 ml) freshly squeezed. The fat and sweetness are straightforward: 1 cup unsalted butter (226 grams) softened to room temperature, 1 3/4 cups granulated sugar (350 grams), 2 tablespoons lemon zest, and 2 teaspoons vanilla extract. There are 4 large eggs at room temperature, and for the jewels in the batter I use 2 cups blueberries (I recommend using fresh). To keep the berries from sinking I toss them with 2 teaspoons cake flour (or all-purpose flour).

For the frosting you have options depending on how many layers you want. A smaller batch calls for 1/2 cup unsalted butter (112 grams) softened, 8 oz brick-style cream cheese (226 grams), 1 teaspoon lemon juice freshly squeezed, and 3 to 4 cups powdered sugar (330-440 grams) sifted, with about 1 tablespoon whipping cream as needed. If you want a larger, loftier frosting for a layer cake I go with 3/4 cup unsalted butter (168 grams) softened, 12 ounces brick-style cream cheese (340 grams) full fat, 1 1/2 teaspoons lemon juice freshly squeezed, and 4 1/2 to 5 1/2 cups powdered sugar (495 – 605 grams) sifted, plus 1 to 2 tablespoons whipping cream as needed.

Batter and Baking — the Rhythm I Use

Preheat the oven to 350F (180C) degrees. Grease and flour a 9×13 inch cake pan. For a layer cake, line the bottom of the cake tins with rounds of parchment paper. Then grease and flour the sides of the pans. I find that little step with parchment saves me from a nervous deconstruction when it comes time to flip the layers.

In a medium bowl sift together the flour, baking powder, baking soda and salt. Whisk together and set aside. Combine the buttermilk and freshly squeezed lemon juice. Whisk with a fork and set aside. In a large bowl beat together the butter, sugar and lemon zest until fluffy. About 2-3 minutes. Add in the vanilla extract and beat in the eggs 1 at a time. Turn off the mixer and scrape down the sides of the bowl after each addition.

This is where the rhythm matters: with the mixer on low speed, beat about 1/3 of the flour mixture into the butter mixture. Then mix in about 1/2 of the milk and lemon juice mixture. Turn off the mixer and scrape down the sides and bottom of the bowl. Repeat the process — beat in about 1/3 of the flour mixture, followed by the rest of the milk and lemon juice mixture. Lastly, beat in the last 1/3 of the flour mixture. Do not overmix.

Toss the blueberries with the 2 teaspoons of flour, then gently fold into the batter with a spatula or rubber spoon. Pour the batter into the prepared pan/pans. Bake for 30-35 minutes for a 9×13 inch pan, or about 25-30 minutes for layer cakes. When done baking, the top should look set and an inserted toothpick comes out clean. If you gently press on the top of the cake it should feel firm and slightly springy to the touch, but not gooey. Cool the cakes in the pan. If making a layer cake, be very, very careful when inserting the pans. Do not try to invert the cake pans while they are still hot.

A note I repeat to anyone who will listen: letting the batter rest for a few minutes before baking helps the bubbles settle and reduces tunnels in the crumb.

Cream Cheese Frosting and Decorating

Cream Cheese Frosting (same process for a 9×13 inch and a layer cake) is forgiving and forgiving is my favorite thing. For either batch, beat the softened butter and cream cheese together until smooth. Add the lemon juice, then slowly mix in the sifted powdered sugar until you reach a spreadable consistency. Add the whipping cream, a tablespoon at a time, if you want a silkier, pipeable frosting. For a 9×13 cake the smaller measurements are perfect; if you build a layer cake use the larger measurements so you have enough to fill and cover.

Decorating is the part where I let the cake breathe. I usually do a thin crumb coat, chill for twenty minutes, then finish with a thicker, swirled top. Fresh blueberries and a few curls of lemon zest make the best, easiest garnish. If you want to get fancy, toast some thin almond slivers for a contrasting crunch. For inspiration on other bright and tart lemon-blueberry ways to present these flavors, I sometimes look at tart recipes and ideas similar to lemon and blueberry cheesecake tarts.

A Few Things I’ve Learned

I have three silly but useful habits that save me grief. I always bring the eggs and butter to room temperature ahead of time; cold ingredients make the batter seize and the texture suffers. I use fresh lemon juice — the aroma is different and lifts the whole cake. And I always flour the berries; that tiny step keeps them suspended in the crumb rather than pooled at the bottom.

If the top is browning too quickly, tent it with foil after about 20 minutes; it keeps the center cooking through without burning the zest-sprinkled surface. If you want to make this ahead, you can bake the layers a day early and keep them wrapped tightly in the fridge; assemble the frosting on the day you serve. For a how-to on a similar cream-cheese-frosted version and assembly tips, I sometimes refer to notes I saved from a longer recipe like a lemon blueberry cake with cream cheese frosting.

A couple of variations that I rotate through: swap half the cake flour for all-purpose if you want a slightly denser crumb, or fold in a teaspoon of lemon extract for an exaggerated lemon punch. For a lighter finish, fold 1/2 cup sour cream into the batter in place of some buttermilk. If you want to go gluten-free, a 1-to-1 GF flour can work but expect a different texture.

When it comes to serving, I like this cake with a cup of strong coffee in the morning or a light tea in the afternoon. It holds up beautifully at brunch next to eggs and fruit. Leftovers keep well wrapped in the refrigerator for up to four days; if you’ve already frosted it, store it in a cake carrier or under a dome to prevent the frosting from absorbing other flavors. You can freeze unfrosted layers tightly wrapped for a month, then thaw overnight in the fridge and frost the next day.

Conclusion

If you want a slightly different take or a tested layer-cake walkthrough that inspired my approach, I often consult Lemon Blueberry Layer Cake – Sally’s Baking Addiction for technique ideas and decoration inspiration.