3 envelopes Knox gelatin
4 cups boiling water
4 pkg. (3 oz. each) Jello
Mix gelatin and Jello in a heat-safe bowl. Pour in boiling water and stir briskly until completely dissolved. Pour in a 13x9 pan. Cool in fridge for 4-5 hours. These are very firm blocks, easy to eat with your hands!
You can choose any four flavors of Jello. We like 2 boxes of grape and 2 boxes of cranberry, but it's fun to try new combinations!