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Easy Zesty Lemon Blueberry Flag Cake

easy zesty lemon blueberry flag cake - featured image

A simple, bright, and festive lemon blueberry cake perfect for summer parties, featuring a patriotic flag pattern made with fresh blueberries and zesty lemon flavor.

Ingredients

Scale
  • 2 ½ cups (315g) all-purpose flour
  • 2 ½ tsp baking powder
  • ½ tsp salt
  • 1 cup (227g) unsalted butter, softened
  • 1 ⅞ cups (375g) granulated sugar
  • 4 large eggs, room temperature
  • ¾ cup (180ml) whole milk, room temperature
  • 1 tsp pure vanilla extract
  • ¼ cup (60ml) fresh lemon juice
  • 2 tbsp lemon zest, finely grated
  • 1 ½ cups (225g) fresh blueberries, washed and patted dry
  • Optional: 1 tbsp sugar for sprinkling over blueberries
  • For the glaze (optional):
  • 1 cup (120g) powdered sugar
  • 23 tbsp fresh lemon juice
  • 1 tbsp milk or water (if glaze is too thick)

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch pan with butter or nonstick spray and lightly dust with flour.
  2. In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
  3. In a large bowl, beat softened butter and granulated sugar on medium speed until fluffy and pale, about 3-4 minutes.
  4. Add eggs one at a time, beating well after each addition.
  5. In a small bowl, combine milk, vanilla extract, fresh lemon juice, and lemon zest.
  6. Add dry and wet ingredients alternately to the butter mixture, starting and ending with dry ingredients. Mix gently until just combined.
  7. Pour half of the batter into the prepared pan, spreading evenly. Scatter half of the blueberries over the batter in horizontal lines.
  8. Spread remaining batter gently over blueberries. Arrange remaining blueberries vertically in the upper left corner to mimic the flag’s blue field.
  9. Bake for 40-45 minutes or until a toothpick inserted in the center comes out clean.
  10. Cool cake in the pan for 20 minutes, then transfer to a wire rack to cool completely.
  11. For the glaze (optional), whisk powdered sugar and lemon juice until smooth. Drizzle over cooled cake before serving.

Notes

If blueberries start sinking during baking, toss them lightly in flour before adding to batter. Use room temperature ingredients for best texture. Avoid overmixing the batter to keep cake light. Frozen blueberries can be used if thawed and drained well. Glaze the cake only after it has fully cooled to prevent icing from sliding off.

Nutrition

Keywords: lemon blueberry cake, summer dessert, flag cake, easy cake recipe, patriotic cake, lemon cake, blueberry dessert, summer party dessert