INGREDIENTS
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3/4 cup salted butter (1 1/2 sticks)
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1/2 cup confectioner's sugar
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1/2 cup sugar
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3 eggs
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3 cups all purpose flour
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3/4 teaspoon baking powder
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1/2 teaspoon vanilla
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2 cups confectioner's sugar
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2 Tablespoons or more of water
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2 teaspoons vanilla
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rainbow sprinkles