2 c. peanut butter
1/2 c. melted butter
2 3/4 c. powdered sugar
1 tsp. vanilla
1 (12 oz.) pkg. semi sweet chocolate chips
1 tbsp. butter

Mix peanut butter and 1/2 cup butter together. Blend in powdered sugar and vanilla. Pat mixture into a 9"x13" pan. Melt chocolate chips and tablespoon of butter together. Pour over peanut butter mixture. Refrigerate 10 minutes then cut into squares. Store in refrigerator.