How to Make Rainbow Jello in a Glass – Recipe & Tips

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How gorgeous is this Rainbow Jello in a glass? If you’ve been intimidated at the thought of trying to make rainbow jello, it’s not hard at all. It’s just time-consuming – not gonna lie.

But kids love it. And serving it in these glasses is a lot of fun. There’s just something special about making individual portions in glasses.

There’s more than one way to make rainbow jello. In this version, you make thin white layers in between the colorful jello layers, and it looks like this:

Rainbow Jello in two shot glasses on counterPin

 

The other option is to leave out the white layers. Fewer layers means less work, so if you’re pressed for time or just can’t be bothered to do the white layers, you can skip those steps.

And if you decide this dessert is just too much work, you could try a different sort of rainbow dessert recipes. Or check out our collection of easy to make dessert recipes.

Basically, however you decided to do it, you’re making a layer of jello in glasses, putting the glasses in the fridge to let those layers set, and preparing the next layer so you can pour it once the first has set. Rinse, lather, repeat until you have all the layers you want.

Ways to Make Rainbow Jello

Rainbow jello is simple layered jello in different colors, one layer atop the next. In this recipe they’re separated by a white layer made from a condensed milk mixture, but you can leave it out.

You use the same methods and ingredients whether you make it as individual cups, or in a pan to be cut later, or any other shape. Any recipe will work with any container.

No matter which method or style you pick, this is always a fun dessert that most everyone enjoys.

Yield: About 4 glasses

Rainbow Jell-o in a Glass

Rainbow Jello in two shot glasses on counter
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How gorgeous is this Rainbow Jello in a glass? If you've been intimidated at the thought of trying to make rainbow jello, it's not hard at all. It's just time-consuming - not gonna lie. But kids love it. And serving it in these glasses is a lot of fun. There's just something special about making individual portions in glasses.

Prep Time 2 hours
Cook Time 3 hours
Total Time 5 hours

Ingredients

  • 6 small packages of jello in various colors
  • 5 packages Knox unflavored gelatin
  • 2 14 ounce cans of sweetened condensed milk
  • Water

Instructions

  1. For the first layer, mix a package of jello with 1 teaspoon of the gelatin and a cup of boiling water. Cool and pour into the bottom of each glass. Refrigerate until set (about 30 minutes).
  2. While waiting for that to set, make your second layer of gelatin mixture and let it be cooling on the countertop.
  3. For the second layer, mix an envelope of gelatin with 1/2 cup hot water until it dissolves. Add 1/2 can of condensed milk and another 1/2 cup of hot water. Once your first Jello layers have cooled, bring them out of the refrigerator and pour this mixture over them in a thin layer. Refrigerate again until firm.
  4. While that's setting in the fridge, go ahead and follow step 1 again to make a new layer of jello. And so on and so forth until you're done creating the layers and the dessert has set.

Notes

Once it's set, it's still a good idea to leave it in the fridge overnight.

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Last Updated:

August 27, 2025

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