A seven-layer Jell-O salad can be made with any brand of fruit-flavored gelatin, not just Jell-O, and evaporated milk. This recipe must be made in advance, as it takes over six hours to prepare properly. This seven-layer gelatin salad receives largely positive reviews on Allrecipes.com.
Spray the inside of a 9-by-13-inch pan with nonstick cooking spray. Make sure to coat the entire pan to keep the gelatin from sticking as it sets.
Dissolve one 3-ounce package of gelatin in 3/4 cup boiling water. Any flavors of gelatin can be used for this recipe, but for the best results, each packet should be a different color. Stir 3/4 cup cold water into the hot gelatin mixture, and spoon into the greased pan. Refrigerate for 45 minutes or until almost set.
Dissolve a second 3-ounce package of gelatin in 1/2 cup boiling water. Stir in 1/2 cup cold water and 1/2 cup evaporated milk. Spoon this gelatin mixture over the first layer, and refrigerate for 45 minutes. Repeat these steps, alternating between plain gelatin and gelatin with milk layers, until all seven layers are complete. This process may take up to seven hours.
Garnish the seven-layer gelatin salad with whipped topping before serving.