DIRECTIONS

Prepare cake according to package directions. Grease two 13-in. x 9-in. baking pans. Line bottom and sides of one pan with waxed paper; spray with cooking spray. Divide batter among pans. Bake at 350° for 15-20 minutes. Cool.
    In a large saucepan, bring sugar and milk to a boil. Reduce heat to medium and stir in marshmallows until smooth. Add coconut. Spread over second cake.
    Using waxed paper, remove second cake from pan and carefully invert on top of filling; carefully peel off waxed paper. Cool completely.
    In another saucepan, bring the sugar, milk and butter to a boil. Remove from heat; add chips and stir until smooth. Add nuts. Pour over cake; cool to room temperature. Cover and refrigerate overnight. Yield: 16-20 servings.