So I had a student bring cupcakes with this frosting on the other day, they were amazing, not sure where the frosting recipe is from, but I definitely don't want to loose it.
3/4 C. butter
1/2 C. shortening
4 cups powdered sugar
2 tsp. vanilla
2 tbsp. milk
1/4 tsp salt
6 crushed oreos, crush well before using your mixer.
Blend together and enjoy! Top with oreos, it will make a pretty thick frosting, but it is awesome!