Description
This Lemon Blueberry Cake is a moist, fluffy cake bursting with fresh blueberries and vibrant lemon flavor. It is topped with a smooth, tangy cream cheese frosting perfect for any occasion. The recipe includes options for both a 9×13 inch sheet cake and a layered cake, making it versatile and visually appealing.
Ingredients
Scale
Cake
- 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 (or all-purpose flour) for tossing with blueberries
Cream Cheese Frosting
- 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
- Preheat and Prepare Pan: Preheat oven to 350°F (180°C). Grease and flour a 9×13 inch cake pan or line cake tins with parchment paper and grease/flour for a layer cake.
- Mix Dry Ingredients: In a medium bowl sift together cake flour, baking powder, baking soda, and salt. Whisk and set aside.
- Combine Buttermilk and Lemon Juice: In a small bowl, whisk the buttermilk and freshly squeezed lemon juice together and set aside.
- Cream Butter, Sugar, and Zest: In a large bowl, beat the butter, sugar, and lemon zest together until fluffy, about 2-3 minutes.
- Add Vanilla and Eggs: Beat in the vanilla extract. Then add eggs one at a time, beating and scraping down the bowl after each addition.
- Alternate Adding Flour and Buttermilk Mixture: With mixer on low, add one-third of the flour mixture, then half of the buttermilk-lemon juice mixture. Scrape bowl. Repeat with another one-third flour and remaining buttermilk mixture, then finish with last third of flour. Avoid overmixing.
- Fold in Blueberries: Toss blueberries with 2 teaspoons flour to prevent sinking, then gently fold into batter using a spatula.
- Bake: Pour batter into prepared pan(s). Bake for 30-35 minutes for 9×13 pan, or 25-30 minutes for layers. Cake is done when top is set and a toothpick comes out clean, and cake feels firm but slightly springy.
- Cool: Cool cakes in pans. For layer cake, handle carefully; do not invert pans while hot.
- Make Frosting: Beat softened butter until soft. Add cream cheese and mix until combined.
- Add Lemon Juice and Sugar: Mix in lemon juice and 3 cups powdered sugar, starting on low speed then medium as sugar incorporates.
- Adjust Frosting Thickness: Beat in remaining powdered sugar in 1/2 cup increments until desired consistency and sweetness. If too thick, add 1 tablespoon whipping cream and beat.
- Decorate Sheet Cake: Frost cooled 9×13 inch cake; optionally garnish with blueberries and lemon slices.
- Decorate Layer Cake: Ensure layers are fully cooled and slightly firm (wrap and refrigerate if needed). Level domed tops if present. Place first layer on serving plate and spread about 3/4 cup frosting on top. Add second layer and frost with 3/4 cup frosting. Add third layer. Apply thin crumb coat to sides, chill 20-30 minutes. Finish frosting sides and top with decorative swirls. Optionally decorate with blueberries.
- Slice and Serve: Use a thin, sharp knife to slice the cake cleanly for serving.
Notes
- Use fresh blueberries for best texture and flavor.
- Tossing blueberries in flour helps prevent them from sinking in the batter.
- Room temperature ingredients (eggs, butter, buttermilk) help achieve a smooth batter and even baking.
- Be careful not to overmix the batter once flour is added to keep the cake light and tender.
- Chilling layered cake between frosting steps helps create neat layers without crumbs mixing into frosting.
- Adjust whipping cream amount in frosting to get your preferred consistency for spreading or piping.
- If using frozen blueberries, do not thaw before adding and toss frozen berries with flour to minimize bleeding.
- Store leftover cake covered in the refrigerator for up to 3 days.