Ingredients

  • 3 cups cake flour (not self-rising)
  • 1 1/2 cups all-purpose flour
  • 3/4 teaspoon baking soda
  • 2 1/4 teaspoons baking powder
  • 1 1/2 teaspoons coarse salt
  • 1 cup plus 2 tablespoons (2 1/4 sticks) unsalted butter, room temperature
  • 2 1/4 cups sugar
  • 5 large whole eggs plus 3 egg yolks, room temperature
  • 2 cups buttermilk, room temperature
  • 2 teaspoons pure vanilla extract
  • Fluffy Vanilla Frosting (page 302)
  • Round candy sprinkles (nonpareils), for decorating (optional)

Method

  • Preheat oven to 350F.
  • Line standard muffin tins with paper liners.
  • Sift together both flours, baking soda, baking powder, and salt.
  • With an electric mixer on medium-high speed, cream butter and sugar until pale and fluffy.
  • Reduce speed to medium.
  • Add whole eggs, one at a time, beating until each is incorporated, scraping down sides of bowl as needed.
  • Add yolks, and beat until thoroughly combined.
  • Reduce speed to low.
  • Add flour mixture in three batches, alternating with two additions of buttermilk, and beating until combined after each.
  • Beat in vanilla.
  • Divide batter evenly among lined cups, filling each three-quarters full.
  • Bake, rotating tins halfway through, until cupcakes spring back when lightly touched and a cake tester inserted in centers comes out clean, about 20 minutes.
  • Transfer tins to wire racks to cool 10 minutes; turn out cupcakes onto racks and let cool completely.
  • Cupcakes can be stored overnight at room temperature, or frozen up to 2 months, in airtight containers.
  • To finish, use a small offset spatula to spread cupcakes with frosting.
  • Refrigerate up to 3 days in airtight containers; bring to room temperature and, if desired, decorate with sprinkles before serving.