Peanut Butter Frosting:
1 cup unsalted butter at room temperature
1 cup creamy peanut butter
3 cups powdered sugar
1 tbsp milk
I used a KitchenAid mixer with the paddle, dumped all the ingredients in and whipped it good for about 3 minutes. It made the texture super light and fluffy, almost like light cookie dough and people absolutely loved it. If you don't have a powerful mixer you'll want to cream the peanut butter, the butter, and the milk first and then slowly add in powdered sugar.
Top with chopped up pieces of Reese's and you and everyone around you will be happy.