Vanilla Cupcake Filling Ideas. In a large bowl mix butter and sugar with an electric mixer or hand-held mixer until light and fluffy about 5 minutes. Stir in the egg whites.
Stir in the egg whites. Line a 12-cup cupcake pan with paper baking cups. In a large bowl mix butter and sugar with an electric mixer or hand-held mixer until light and fluffy about 5 minutes.
Stir in the egg whites.
Stir in the egg whites. In a large bowl mix butter and sugar with an electric mixer or hand-held mixer until light and fluffy about 5 minutes. Stir in the egg whites. Line a 12-cup cupcake pan with paper baking cups.