"Makes 12 cupcakes. Store cupcakes in an airtight container at room temperature for 1 day and then in the refrigerator for up to 4 days...."
INGREDIENTS
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1/2 cup (1 stick) unsalted butter, softened to room temperature
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1 cup granulated sugar
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2 eggs
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2 teaspoons vanilla extract
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1 and 1/2 cups all-purpose flour
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2 teaspoons baking powder
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1/2 teaspoon salt
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1/2 cup milk (cow, almond, soy)
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zest + juice of two medium lemons
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1 cup (2 sticks) unsalted butter, softened to room temperature
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3-4 cups powdered (confectioners') sugar
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1/4 cup heavy cream (see note about substituting milk or half-and-half)
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2 teaspoons vanilla extract
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1/4 teaspoon salt, to taste
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additional lemon zest for decoration, if desired