Zingy Flavorful Lemon Blueberry Cake

Ingredients

• 2 cups All‑purpose flour (Fluff and spoon; do not scoop to avoid packing)
• 1 2/3 cups Granulated sugar (Adds sweetness and tenderness)
• 0.25 teaspoon Kosher salt (Enhances flavor)
• 1.5 teaspoons Baking powder (Leavens the cake)
• 0.75 cup Unsalted butter, softened (Room‑temperature, 1.5 sticks)
• 0.5 cup Sour cream (Adds moisture and tang)
• 0.5 cup Whole milk (Helps thin the batter)
• 1 tablespoon Lemon zest (Use a microplane; only the yellow part)
• 1 tablespoon Lemon juice (Freshly squeezed)
• 3 large Egg whites (For a light crumb; yolks optional)
• 1 tablespoon Vanilla extract (Pure vanilla)
• 1 cup Fresh blueberries (for batter) (Do not thaw; keep dry)
• 1 cup Fresh blueberries (for reduction) (Same berries as above)
• 0.5 cup Fresh blueberries (for topping) (Freeze on a plate before decorating)
• 1 tablespoon Water (for reduction) (Helps start the sauce)
• 1 tablespoon Sugar (for reduction) (Just a touch of sweetness)
• 1.5 cup Unsalted butter, softened (for frosting) (Room‑temperature, 3 sticks)
• 6 cups Powdered sugar (Sifted for smooth buttercream)
• 3 tablespoons Lemon juice (for frosting) (Freshly squeezed)
• 0.25 teaspoon Kosher salt (for frosting) (Enhances buttercream flavor)

Instructions

1. Preheat Oven

   Set the oven to 350°F and let it preheat while you prepare the batter.

   Time: PT5M

   Temperature: 350°F

2. Measure Dry Ingredients

   In a large bowl whisk together 2 cups (240 g) flour, 1 ⅔ cups (333 g) sugar, ¼ tsp kosher salt, and 1½ tsp baking powder. Reserve 1 tbsp of this mixture on a small plate.

   Time: PT5M

3. Cream Butter

   Using the stand mixer on medium, beat ¾ cup (170 g) softened butter for about 2 minutes until smooth.

   Time: PT2M

4. Reverse Creaming

   Add the measured dry ingredients (including the sugar) to the butter. Mix on medium‑low until the mixture looks like fine sand with no large butter chunks.

   Time: PT5M

5. Combine Wet Ingredients

   In a separate bowl whisk together ½ cup sour cream, ½ cup whole milk, 1 tbsp lemon zest, 1 tbsp lemon juice, 3 egg whites, and 1 tbsp vanilla until smooth.

   Time: PT5M

6. Mix Wet into Dry

   With the mixer on low, slowly pour the wet mixture into the dry‑butter mixture. Mix just until combined – the batter will be crumbly at first then come together.

   Time: PT3M

7. Toss Blueberries in Reserved Dry

   Toss the 1 tbsp reserved dry mixture with the 1 cup fresh blueberries. This coats the berries and helps them stay suspended.

   Time: PT3M

8. Fold in Blueberries

   Gently fold the blueberry‑coated mixture into the batter using a spatula. Do not over‑mix.

   Time: PT2M

9. Prepare Cake Pans

   Butter and flour three 6‑inch round pans, line the bottoms with parchment circles, and (optional) wrap cake strips around each pan for even baking.

   Time: PT5M

10. Divide Batter

    Using a kitchen scale, divide the batter equally among the three pans (about ⅓ of the total per pan). Smooth the tops with a spatula.

    Time: PT3M

11. Bake Cakes

    Bake at 350°F for 30 minutes, or until the center springs back when lightly pressed.

    Time: PT30M

    Temperature: 350°F

12. Blueberry Reduction

    While the cakes bake, combine 1 cup blueberries, 1 tbsp water, 1 tbsp lemon juice, and 1 tbsp sugar in a saucepan. Cook over medium‑low, mashing with a fork, until it reaches a boil, then simmer until reduced by half (≈6‑7 minutes).

    Time: PT7M

    Temperature: Medium‑low

13. Strain Reduction

    Pass the hot reduction through a fine‑mesh strainer into a small bowl, pressing to extract all liquid. Set aside to cool.

    Time: PT2M

14. Cool Cakes

    Let the cakes cool in the pans for 10 minutes, then invert onto a cooling rack and cool completely (about 20 minutes).

    Time: PT30M

15. Make Lemon Buttercream

    In the stand mixer, beat 1½ cups (340 g) softened butter on medium for 2 minutes. Gradually add 6 cups powdered sugar, 3 tbsp lemon juice, and ¼ tsp kosher salt, mixing on low then high for 1 minute until fluffy.

    Time: PT10M

16. Blueberry Buttercream Portion

    Reserve about ¾ cup of the buttercream. To this portion, add the cooled blueberry reduction a tablespoon at a time, mixing until you reach the desired color and flavor.

    Time: PT3M

17. Assemble Cake – First Layers

    Place the first cake layer on a turntable or plate. Spread a thin layer of blueberry buttercream, add the second layer, then spread a thin layer of lemon buttercream. Top with the third layer.

    Time: PT10M

18. Final Frosting and Decoration

    Apply a smooth coat of the remaining lemon buttercream over the top and sides. Add dollops of blueberry buttercream around the top edge and scatter frozen blueberries for a frosted‑look finish.

    Time: PT5M

19. Set and Serve

    Refrigerate the cake for 15 minutes to let the frosting set, then slice and serve.

    Time: PT15M

Nutrition Facts

Calories

350

Protein

4 g

Carbohydrates

45 g

Fat

18 g

Fiber

2 g

Ingredient Substitutions

• Instead of All‑purpose flour: Pastry flour, Whole wheat flour (use less)
• Instead of Granulated sugar: Cane sugar, Coconut sugar (adjust amount)
• Instead of Kosher salt: Table salt (use ⅛ tsp)
• Instead of Baking powder: Baking soda + cream of tartar (½ tsp + ¼ tsp)
• Instead of Unsalted butter, softened: Margarine (use same amount)
• Instead of Sour cream: Greek yogurt, Crème fraîche
• Instead of Whole milk: Buttermilk (use ½ cup, reduce lemon juice)
• Instead of Lemon zest: Lemon extract (1 tsp)
• Instead of Lemon juice: Lemon juice from bottle
• Instead of Egg whites: Aquafaba (3 tbsp)
• Instead of Vanilla extract: Vanilla bean (½ bean)
• Instead of Fresh blueberries (for batter): Frozen blueberries (thawed and drained)
• Instead of Fresh blueberries (for reduction): Frozen blueberries
• Instead of Fresh blueberries (for topping): Frozen blueberries
• Instead of Sugar (for reduction): Honey (½ tbsp)
• Instead of Unsalted butter, softened (for frosting): Margarine
• Instead of Powdered sugar: Confectioners’ sugar
• Instead of Lemon juice (for frosting): Lemon zest + water
• Instead of Kosher salt (for frosting): Table salt (use less)

Equipment Needed

• Oven
• Stand mixer with paddle attachment
• Large mixing bowl
• Measuring cups and spoons
• Whisk (optional)
• Spatula
• Kitchen scale (optional)
• Three 6‑inch round cake pans
• Parchment paper
• Cake strips (optional) (optional)
• Cooling rack
• Saucepan
• Fork (for mashing berries) (optional)
• Fine‑mesh strainer (optional)
• Piping bag (optional)
• Turntable (optional) (optional)
• Offset spatula (optional)
• Knife for leveling (optional)

Critical Steps — Do Not Skip

• Reverse creaming to prevent gluten over‑development
• Tossing blueberries in reserved dry mixture to keep them from sinking
• Using cake strips for flat, even layers
• Making a blueberry reduction to boost flavor and color
• Cooling cakes completely before frosting to avoid melting buttercream

Chef Tips from the Video

• Room‑temperature butter and eggs give a smoother batter
• A microplane yields the most aromatic lemon zest without bitter pith
• If you don’t have cake strips, place a pan of water on the lower rack to add humidity and reduce doming
• For a glossy finish, brush the top of the cake with a thin glaze of the blueberry reduction before frosting.

Troubleshooting

Storage

Refrigerator: Store sliced cake in an airtight container for up to 3 days.

Freezer: Wrap tightly in plastic and foil; freeze for up to 2 months.

Room temperature: Best enjoyed the same day; avoid leaving out more than 4 hours.

Make-Ahead Tips

• Bake the layers up to 2 days ahead and store wrapped in plastic
• Prepare the blueberry reduction and lemon buttercream a day before; keep both refrigerated
• Freeze the topping blueberries on a tray before decorating

Frequently Asked Questions