Preheat oven to 350 degrees. Line cupcake tins with paper liners.
CAKE BATTER: Cream together butter and sugar. Beat in eggs; stir in vanilla. Add flour and baking powder until well mixed. Stir in milk until smooth. Fill cupcake liners 2/3 full with batter. Press one peanut butter cup into each cupcake. Bake for 20-25 minutes. Cool completely before frosting.
FROSTING: Cream butter and peanut butter. Add sugar until combined. Stir in milk as needed until smooth. Frost cooled cupcakes and decorate as desired.
Last Step: Don't forget to share!
Make all your friends drool by posting a picture of your finished recipe on your favorite social
network. And don't forget to tag Just A Pinch and include #justapinchrecipes so we can see it too!