1 (12 oz.) pkg. semi-sweet chocolate chips
1 (12 oz.) pkg. butterscotch chips
1/2 c. butter
1 (10 1/2 oz.) pkg. miniature marshmallows
1 c. nuts

In 4 quart mcirowave proof bowl, combine chocolate and butterscotch chips and butter. Cook on 70% for 5 minutes or until melted. Stir. Fold in marshmallows and nuts. Spread in 13"x9" pan. Refrigerate until set. Cut into squares.