Lemon-Blueberry Layer Cake

Ingredients

• 2 cups all-purpose flour
• 6 tablespoons all-purpose flour
• 2 teaspoons baking powder
• 1 teaspoon salt
• 3 cups fresh blueberries
• 1/2 cup sour cream
• 1/2 cup whole milk
• 2 teaspoons vanilla extract
• 3/4 teaspoon lemon extract
• 1 teaspoon lemon zest
• 1 cup butter, softened
• 1 1/2 cups white sugar
• 4 large eggs