I used this recipe from fellow nestie Loves to Eat
Peanut Butter (I used Peter Pan.)
Hershey's Perfectly Chocolate Frosting:
1/2 cup (1 stick) butter
2/3 cup HERSHEY'S Cocoa
3 cups powdered sugar
1/3 cup milk
1 teaspoon vanilla extract
Melt butter. Stir in cocoa. Alternately add powdered sugar and milk, beating to spreading consistency. Add small amount of additional milk, if needed. Stir in vanilla.
Bake vanilla cupcakes.
Frost with a thin layer of peanut butter.
Put in fridge for 30 minutes.
Top the peanut butter with chocolate frosting.
Follow directions above. Top the peanut butter with marshmallow fluff before icing with chocolate frosting.