Reese'S Cups - cooking recipe

Ingredients

2 c. peanut butter
2 1/2 c. powdered sugar
1 tsp. vanilla
1/2 c. margarine, melted
1/2 c. brown sugar

Preparation

Mix all ingredients and press into a 9 x 13-inch pan.
Melt over low heat 1/2 stick butter and add 6 ounces chocolate chips. Pour over top of peanut butter mixture.
Cool and cut into squares.