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Costco Vanilla Sheet Cake (Copycat Recipe)
Ingredients
  • subheading: White cake layers:
  • 5 ¼ cups cake flour
  • 3 ⅓ cups granulated sugar
  • 2 tablespoons baking powder
  • 1 ½ teaspoons fine grain salt
  • 1 ½ cups unsalted butter at room temperature
  • 8 egg whites from large eggs at room temperature
  • 2 whole large eggs at room temperature
  • 2 cups whole milk at room temperature
  • 1 ½ tablespoons pure vanilla extract
  • subheading: Vanilla cheesecake mousse filling:
  • 8 oz. cream cheese softened
  • ½ cup powdered sugar
  • 1 ½ cups heavy cream
  • ½ cup whole milk
  • 3.4 oz. package instant vanilla pudding mix dry mix
  • subheading: Vanilla buttercream (American):
  • 1 lb. unsalted butter at room temperature
  • 7 cups confectioners’ sugar
  • 2 tablespoons vanilla extract
  • Whole milk to thin to spreading consistency
  • 1 cup rainbow sprinkles or other decors
Steps
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