1 (12 oz.) pkg. peanut butter chips
1 (14 oz.) can Eagle Brand condensed milk
1/4 c. butter
1 (6 oz.) pkg. semi-sweet chocolate chips

In large pan, melt peanut butter chips, 1 cup condensed milk and 2 tablespoons butter. Remove from heat, spread into wax paper lined 8" square pan. In small saucepan, melt chocolate chips, remaining condensed milk and butter. Spread chocolate mixture on top of peanut butter mixture. Chill 2 hours. Turn fudge onto cutting board. Peel off paper and cut into squares. Store in tightly covered container. Makes 2 pounds.