What you'll need:
1\3 cup of butter
1\3 of vegetable shortening
3\4 cup peanut butter
1 Tsp of pure vanilla
4 cups of sifted confections sugar
4-6 tablespoons of milk
Cream together the softened butter & shortening.
then add the peanut butter and vanilla. add one cup at time of icing sugar. its will start to look very dry after a few cups but don't worry once you add the milk it will all be good. So then gradually add your milk.
you can refrigerate up to 2 weeks. make sure you cover up your unused portion so it does not dry out. If you put in the fridge to keep,make sure you re whip it before icing your cake.
Then topped with my favorite all time Candie...