3 c. semi-sweet or milk chocolate chips
1/4 c. butter
1 (14 oz.) can Bordens condensed milk
1 c. chopped nuts

Substitute peanut butter chips for chocolate chips. Place all ingredients except nuts in microwaveable bowl. Microwave at Medium (50%) for 2 minutes. Stir thoroughly. Put back for 2 minutes more. Stir in nuts. Pour into well-greased 8 x 8 inch dish. Refrigerate.