Butter cream icing, as easy as pie!
For pie cupcakes I used a tad brown coloring, spread over cupcake, covered with m&m's then piped icing on and around.
Cream 1 c softened butter
1 Tbs vanilla
1/4 c milk
Add powdered sugar, about 1 pound. Add enough to reach desired consistency.
add coloring if needed
Spread or place in bag and decorate
For swirled effect,
dip tooth pick in coloring and spread down sides of decorating bag, carefully place icing in bag.
For peanut butter icing,
Mix 2 c peanut butter with 3-4 Tbs milk, add powdered sugar to desired consistency.