INGREDIENTS
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½ cup butter, softened
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1 cup granulated sugar
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1 egg
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1 egg white
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1½ Tbsp sour cream
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1 tsp vanilla extract
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2½ cups all purpose flour
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½ tsp baking powder
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½ tsp salt
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Vanilla Frosting:
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¼ cup unsalted butter, softened
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2 cups powdered sugar
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2-3 Tbsp half and half
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½ tsp vanilla
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Any color of food coloring (optional