Quick and Easy Rocky Road Fudge

Line an 8" square pan with pil, extending foil over edges, and lightly butter the foil. Melt chips in large saucepan over very low heat, stirring until smooth. Remove from heat and stir in frosting. Add marshmellows and nuts, mix until well coated. Spread in buttered pan, and chill until firm (about 1 hour). Remove from pan by pulling up foil, cut into squares. There are many variations you can make, using different kinds of chips (vanillia, butterscotch, peanut butter, etc.) and different flavors of frosting.