"This is a moist and fluffy vanilla cake with lots of sprinkles and a whipped vanilla buttercream. It's almost impossible not to feel happy when you see the fun pop of rainbow confetti! - Courtney Rich, Highland, UT..."
INGREDIENTS
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1 cup unsalted butter, room temperature
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1/3 cup vegetable oil
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1-3/4 cups sugar
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3 large eggs, room temperature
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3 large egg whites, room temperature
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1 tablespoon vanilla extract
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3 cups cake flour
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2 teaspoons baking powder
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1 teaspoon salt
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1 cup buttermilk, room temperature
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1/4 cup rainbow sprinkles
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1-1/2 cups unsalted butter, softened
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4-1/2 cups confectioners' sugar, sifted
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3 tablespoons heavy whipping cream
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2 teaspoons clear vanilla extract
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Soft pink paste food coloring