1 can whole cranberry sauce
1 can sweetened condensed milk
1 large can crushed pineapple, drained
1 cup miniature marshmallows
1/2 cup chopped walnuts
1 (9-oz.) container Cool Whip

Combine all ingredients well (except Cool Whip). Using a spatula, gently fold in Cool Whip and freeze for at least several hours before serving.