1 c. Reese's peanut butter chips
1 (14 oz.) can sweetened condensed milk
1 tsp. vanilla
1 c. semi sweet chocolate chips

Line 8" square pan with foil. In small microwave safe bowl, place peanut butter chips and 2/3 cup sweetened condensed milk. Microwave at high (100%) 1 to 1 1/2 minutes, stirring after 1 minutes until chips are melted and mixture is smooth when stirred. Stir in 1/2 teaspoon vanilla. Spread into prepared pan.

In microwave safe bowl place remaining sweetened condensed milk and chocolate chips. Repeat above procedure. Stir in remaining vanilla, spread evenly on peanut butter layer. Cover, chill until firm. Cut into squares. Cover and keep in refrigerator.