Lemon blueberry cake uses lemon zest and juice in a butter batter, with fresh blueberries folded in at the end. The main method here makes three 8-inch round layers with cream cheese frosting. A 9-by-13-inch sheet-cake option uses the same batter but a smaller, separate frosting quantity.
Choose one format before measuring frosting. The two frosting formulas are alternatives, not ingredients to combine. Cooling is also part of the schedule: warm berry-filled layers are fragile, and cream cheese frosting needs a completely cooled surface before stacking.
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Why This Recipe Works
Creaming butter, sugar, and lemon zest distributes the zest through the batter. Alternating dry ingredients with the buttermilk and juice keeps mixing manageable. Lemon blueberry cake uses cake flour for a tender crumb, so replacing it cup-for-cup with a different flour is not a neutral change.
The blueberries are folded in after the batter is mixed, limiting damage to their skins. A small flour coating is included separately in the ingredients. It helps handling but cannot guarantee that every berry stays suspended in every oven and pan.
Ingredients for Lemon Blueberry Cake
Use room-temperature butter, eggs, and buttermilk. Zest the lemons before juicing them, avoiding the bitter white pith. The three cups of cake flour go into the dry mixture; the additional two teaspoons are reserved for tossing the berries.
For the layer lemon blueberry cake, measure the larger frosting group only. It uses 3/4 cup butter, 12 ounces cream cheese, 1 1/2 teaspoons lemon juice, 4 1/2–5 1/2 cups powdered sugar, and 1–2 tablespoons cream as needed. Use brick-style cream cheese rather than a soft spread.
Cake Ingredients
- 3 cups cake flour (360 grams)
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 3/4 cup buttermilk (180 ml, room temperature)
- 1/3 cup lemon juice (80 ml, freshly squeezed)
- 1 cup unsalted butter (226 grams, softened to room temperature)
- 1 3/4 cups granulated sugar (350 grams)
- 2 tablespoons lemon zest
- 2 teaspoons vanilla extract
- 4 large eggs (room temperature)
- 2 cups blueberries (fresh recommended)
- 2 teaspoons cake flour (separate amount for tossing blueberries)
Layer cake frosting (use this batch only)
- 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)
- 4 1/2 – 5 1/2 cups powdered sugar (495 – 605 grams, sifted)
- 1-2 tablespoons whipping cream (as needed)
How to Make Lemon Blueberry Cake
Heat the oven to 350°F. Prepare three 8-inch round pans by lining the bottoms with parchment and greasing and flouring the sides. Whisk the cake flour, baking powder, baking soda, and salt. In another small bowl, combine buttermilk with the batter’s lemon juice.
Beat butter, sugar, and zest for 2–3 minutes until fluffy. Mix in vanilla and then the eggs one at a time, scraping between additions. On low speed, add dry ingredients in three portions and the liquid in two, beginning and ending with the flour mixture. Stop when combined.
Toss berries with the separate two teaspoons of flour, then fold them through the batter. Divide the lemon blueberry cake mixture evenly among the pans. Bake about 25–30 minutes, checking for set centers and a tester without wet batter. Continue checking if necessary. Cool the layers fully before releasing or stacking them.
Beat the layer-frosting butter smooth, add cream cheese and lemon juice, then beat in powdered sugar gradually. Start with the lower quantity and add more within the stated range to get a spreadable texture. Add cream only if needed. Spread about 3/4 cup frosting between each pair of layers, add a thin crumb coat, chill for 30 minutes, and cover with the remaining frosting.
How to Serve
Slice lemon blueberry cake into 12 portions with a clean, sharp knife. Keep it refrigerated between serving periods. The fresh berry flavor and cream cheese topping do not require an extra syrup or a separate filling.
Storage
Cover lemon blueberry cake and refrigerate for 3–4 days. The cream cheese frosting determines the storage choice, even though a plain unfrosted cake can be handled differently. Protect cut surfaces with wrapping or a covered cake container.
Follow FDA raw-flour guidance.
Tips and Variations
For the sheet version, bake the same batter in a prepared 9-by-13-inch pan, beginning to check at 30–35 minutes and extending until set if necessary. Use only the smaller frosting formula: 1/2 cup butter, 8 ounces cream cheese, 1 teaspoon lemon juice, 3–4 cups powdered sugar, and up to 1 tablespoon cream.
Fresh berries are the simplest choice for this lemon blueberry cake. If using frozen berries, fold them in without thawing and expect the timing to change; judge the center rather than the clock alone. Do not put both alternative frosting batches on one cake.
Frequently Asked Questions
Which frosting list should I use?
Use the larger list for three layers and the smaller list for the sheet cake. They are alternatives, not a combined shopping list.
Why are there two flour measurements?
Three cups make the cake batter. The additional two teaspoons coat the blueberries before they are folded in.
Can I frost lemon blueberry cake while warm?
Let it cool completely. Warm layers can break during handling and soften the frosting.
Can I use frozen berries?
Fresh berries are preferred. If using frozen berries, add them unthawed and check the cake for extra baking time.
How do I check that the center is baked?
A tester should have no wet batter and the top should feel set. A blueberry stain on the tester is different from uncooked cake mixture.
More Recipes to Try
- Vintage Buttermilk Vanilla Cake
- Lemon Bars with Shortbread Crust
- Lemon Blueberry Cheesecake
- Blueberry Cobbler
Lemon Blueberry Cake
Ingredients
Cake Ingredients
- 3 cups cake flour (360 grams)
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 3/4 cup buttermilk (180 ml, room temperature)
- 1/3 cup lemon juice (80 ml, freshly squeezed)
- 1 cup unsalted butter (226 grams, softened to room temperature)
- 1 3/4 cups granulated sugar (350 grams)
- 2 tablespoons lemon zest
- 2 teaspoons vanilla extract
- 4 large eggs (room temperature)
- 2 cups blueberries (fresh recommended)
- 2 teaspoons cake flour separate amount for tossing blueberries
Layer cake frosting (use this batch only)
- 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)
- 4 1/2 – 5 1/2 cups powdered sugar (495 – 605 grams, sifted)
- 1-2 tablespoons whipping cream (as needed)
Instructions
- Use three greased 8-inch pans with parchment circles on the bottoms, and heat the oven to 350°F. Whisk the salt and leaveners through 3 cups of cake flour. Mix the 1/3 cup lemon juice into the buttermilk in a separate container.
- Beat 1 cup butter with sugar and zest for 2–3 minutes. Add vanilla and eggs one at a time. Mix in dry ingredients in three additions, alternating with the liquid in two additions, just until smooth.
- Toss fresh blueberries with the separate 2 teaspoons flour and fold gently into batter. Divide among pans. Bake 25–30 minutes, or until the centers are set and a tester has no wet batter. Cool fully before removing and stacking.
- For the layer frosting, beat 3/4 cup butter with 12 ounces cream cheese and 1 1/2 teaspoons lemon juice. Gradually add 4 1/2 cups powdered sugar, then more up to 5 1/2 cups as needed. Use 1–2 tablespoons cream only to loosen overly thick frosting.
- Stack the cooled layers with about 3/4 cup frosting between each. Apply a thin crumb coat, refrigerate 30 minutes, then spread the remaining frosting over the outside. Cut into 12 slices. Allow at least an hour for cooling before the crumb-coat chill.
