2 cups packed brown sugar
1 cup granulated sugar
1 cup evaporated milk
1/2 cup margarine (softened)
1 7-ounce jar marshmallow cream
1 teaspoon vanilla
1 6-ounce package semi-chocolate pieces
1 package butterscotch pieces
1 cup walnuts
In a saucepan, combine first four ingredients. Bring to a full boil, stirring constantly over medium heat. Cook 10 minutes stirring occasionally. Remove from heat. Add marshmallow cream and vanilla. Mix well until smooth.
Add butterscotch pieces and 1/2 cup walnuts to 2 cups of mixture. Blend well. Pour evenly into a greased 9-inch square pan. Add chocolate pieces and 1/2 cup walnuts to the remaining hot mixture. Blend well.
Pour over butterscotch mixture. Chill until firm (2 to 1/2 pounds.)