INGREDIENTS
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Champagne Cupcakes
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1⅔ cups all purpose flour
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1 cup sugar
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¼ tsp baking soda
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1 tsp baking powder
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¾ cup salted butter, room temperature
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3 egg whites
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1 tsp vanilla extract
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½ cup sour cream
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½ cup + 2 tbsp champagne
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Champagne Icing :
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½ cup butter
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½ cup shortening
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4 cups powdered sugar
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4-5 tbsp champagne