1 (12 oz.) pkg. peanut butter chips
1 (14 oz.) can condensed milk
1/4 c. butter
1 (6 oz.) chocolate chips
1/2 c. chopped nuts

In large saucepan melt peanut butter chips; add 1 cup condensed milk and 2 tablespoons of butter; stir occasionally. Remove from heat. Stir in nuts; spread mixture into waxed paper-lined 8-inch pan.

In small saucepan melt chocolate chips, remaining condensed milk, and butter. Spread chocolate mixture on top of peanut butter mixture; chill 2 hour or until firm. Turn fudge onto cutting board. Peel off paper and cut into squares. Tightly cover any leftovers.