1 - 12 oz pkg (2 cups) semi-sweet chocolate chips
1 - 16 oz can chocolate fudge frosting
1 1/2 c miniature marshmallows
3/4 c (3 1/2 oz) chopped mixed nuts

Line an 8 inch square pan with foil, extending foil over edges. Lightly butter foil. Melt chips in large saucepan over very low heat, stirring until smooth. Remove from heat; stir in frosting. Add marshmallows and mixed nuts; mix until well coated. Spread in buttered foil-lined pan. Refrigerate until firm. About 1 hour. Remove fudge from pan by lifting foil; remove foil from fudge. Cut into squares.