Never Fail Fudge

6 cups sugar
2 sticks margarine
1 can carnation milk
2-6oz pkgs chocolate chips
1 jar marshmallow cream
1 cup nuts

Cook sugar, butter, and milk for 16 minutes. Turn off the heat and add chocolate chips. Stir until melted completely and then add marshmallow cream and nuts. Pour into well buttered pan or dish. When completely cool, cut into squares.