Ingredients

4 Cup powdered sugar
2/3 Cup peanut butter
1/4 Cup milk
1 butter stick
1 Tablespoon vanilla
1/2 Cup nuts, optional

Instructions

Blend powdered sugar and peanut butter in an 8 x 8-inch baking dish. Pour in milk. Stir. Cut the butter in chunks and dot top of peanut butter mixture. Cook on high for 1 1/2 minutes. Remove and stir well. Add vanilla and nuts and mix well. Cook 1 1/2 minutes more. stir. Refrigerate for 1 hour.