1 (12 oz.) pkg. semi-sweet chocolate chips
1 (14 oz.) can Eagle Brand sweetened condensed milk (not evaporated milk)
1 teaspoon vanilla extract
1 cup peanut butter chips
In heavy saucepan, over low heat, melt chocolate chips with Eagle Brand milk and vanilla, stirring frequently. Remove from heat. Add peanut butter chips; stir just to distribute chips throughout mixture. Spread evenly into aluminum foil-lined 8-inch square pan. Chill 2 hours or until firm. Turn fudge onto cutting board, peel off foil, and cut into squares. Store covered at room temperature.
Makes about 1-3/4 pounds fudge.