1 c. Reese's peanut butter chips
1 c. chocolate chips
1 can (14 oz.) sweetened condensed milk (not evaporated milk)
1 tsp. vanilla extract

Line an 8 inch square pan with foil or wax paper.

In a microwave safe bowl heat peanut butter chips and 2/3 cup condensed milk in microwave for 1- 1 1/2 minutes on High until mixture is smooth. Stir in 1/2 teaspoon vanilla and pour mixture into pan.

Heat chocolate chips and remaining condensed milk in microwave as above. Add remaining vanilla and pour on top of peanut butter mixture in pan. Cover and refrigerate to cool. Cut in 1 inch square pieces and keep cold until ready to serve. Makes about 20 squares.