Heat water to boiling, add jello & dissolve. Add cranberries & dissolve as well. Remove from heat. Stir in mandarin oranges, pineapple & nuts. Stir till well combined. Pour into decorative mold or casserole dish. Place in refrigerator to firmly set, best if overnight.
TOPPING - Mix all ingredients together and beat until well blended. Place a dollop on each serving.