Ingredients

The following ingredients have 15 Servings
  • 1 3/4 cups (222 grams) all-purpose flour, measured correctly
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 stick (113 grams) unsalted butter, at room temperature
  • 1/2 cup (100 grams) granulated sugar
  • 1/4 cup (50 grams) lightly packed brown sugar
  • 1 large egg plus one egg yolk, at room temperature
  • 1 cup (240 ml) buttermilk, at room temperature 
  • 2 tablespoons fresh lemon juice
  • 1 tablespoon fresh lemon zest
  • 3/4 cup (115 grams) fresh or frozen blueberries
  • 2 tablespoons all-purpose flour
  • 3/4 cup (115 grams) fresh or frozen blueberries (thawed if frozen)
  • 3 cups (306 grams) powdered sugar, sifted
  • 2 sticks (227 grams) unsalted butter, at room temperature
  • 1/4 teaspoon fine salt
  • 2 teaspoons pure vanilla extract
  • 1 to 2 tablespoons heavy or whipping cream
  • Lemon zest, for garnish

Instruction