Vanilla Cupcakes with Pink Lemonade Buttercream Ingredients For cupcakes: 1 ½ cups all-purpose flour ¾ cup sugar 2 teaspoons baking powder ½ teaspoon salt 8 tablespoons butter, room temperature ½ cup buttermilk or sour cream, room temperature 2 large eggs, room temperature 2 teaspoons vanilla extract Buttercream: 1 ½ sticks or 12 ounces butter, at