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Blueberry Cake

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Blueberry Cake made with tender vanilla layers, juicy fresh blueberries, and sweet homemade blueberry jam. Finished with creamy blueberry cream cheese frosting for a stunning bakery style dessert.

Ingredients

For the Blueberry Cake

2 ½ cups all-purpose flour

1 ½ tsp baking powder

¼ tsp baking soda

¼ tsp salt

¾ cup unsalted butter (room temperature)

¼ cup vegetable oil

1 ½ cups granulated sugar

4 large eggs (room temperature)

1 tbsp pure vanilla extract

1 ¼ cups buttermilk

1 cup blueberries (for batter layering)

For the Blueberry Jam Filling

3 cups blueberries (fresh or frozen)

½ cup granulated sugar

1 tbsp lemon juice

2 tsp cornstarch

2 tbsp water

For the Blueberry Puree

1 cup blueberries

For the Blueberry Cream Cheese Frosting

1 cup unsalted butter (2 sticks)

½ cup cream cheese (4 oz)

5 cups powdered sugar

¼ cup reduced blueberry puree

Fresh blueberries (for garnish)

Mint leaves (optional garnish)

Instructions

Making the Blueberry Cake

Preheat Oven: Preheat to 350°F (175°C). Grease and line three 8-inch cake pans with parchment paper.

Dry Ingredients: Whisk flour, baking powder, baking soda, and salt in a bowl.

Cream Butter & Sugar: Beat butter, oil, and sugar for 2 minutes until light and fluffy.

Add Eggs: Add eggs one at a time, mixing well after each addition.

Add Vanilla: Mix in vanilla extract.

Combine Wet & Dry: Alternately add buttermilk and dry ingredients in thirds, starting and ending with flour. Mix on low speed and avoid over-mixing.

Layer Batter: Spread ½–1 cup of plain batter into each pan to form a base layer without blueberries.

Fold Blueberries: Gently fold blueberries into the remaining batter and divide evenly among pans.

Bake: Bake for about 30 minutes or until a toothpick inserted comes out clean.

Cool: Cool in pans for 10 minutes, then transfer to wire racks to cool completely.

Making the Blueberry Jam

Cook Blueberries: Combine blueberries, sugar, and lemon juice in a saucepan. Cook over medium heat for about 10 minutes.

Thicken: Mix cornstarch and water, stir into the mixture, and cook 2 minutes until thickened.

Cool: Transfer to a bowl and refrigerate until completely cool.

Making the Blueberry Puree

Blend: Blend 1 cup blueberries until smooth.

Reduce: Cook puree over medium heat until reduced to ¼ cup. Cool completely before using.

Making the Blueberry Cream Cheese Frosting

Beat Base: Beat butter and cream cheese for 30 seconds until smooth.

Add Sugar: Gradually add half the powdered sugar and mix on medium speed.

Add Puree: Mix in cooled blueberry puree.

Finish Frosting: Add remaining powdered sugar and beat until fluffy (about 1 minute). Adjust consistency if needed.

Assembling the Cake

Layer: Place first cake layer on serving plate. Spread a thin layer of frosting.

Pipe Border: Pipe a frosting ring around the edge.

Add Jam: Fill center with blueberry jam.

Repeat: Add second layer and repeat frosting and jam steps.

Crumb Coat: Add final layer and apply a thin crumb coat. Chill 20–30 minutes.

Final Frosting: Spread remaining frosting smoothly over top and sides.

Decorate: Garnish with fresh blueberries and mint leaves.

Notes

Toss blueberries in 1 tablespoon flour to prevent sinking.

Ensure puree and jam are fully cooled before adding to frosting.

Cake layers can be baked a day ahead and wrapped tightly.

Store refrigerated for up to 4 days.

Bring to room temperature before serving for best texture.