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Rainbow Jello Cups

Rainbow Jell-o cups are a colorful dessert to make for your next celebration. Isn’t there something extra delicious-looking about layered desserts?

I don’t know about you, but I find layers so visually appealing. Then, add the colors of the rainbow to make these Jell-o cups look even more irresistible.

Layered jello into rainbow colors in glass cups.

Rainbow Layered Jell-o Cups

Rainbow treats are great for St. Patrick’s Day, unicorn parties, or any special celebration.

You can change the colors of the Jell-o to match your party theme or holiday. (Like these galaxy Jell-o cups.)

Rainbow Jell-o cups are not hard to make but are time-consuming.

Once you get into the groove of creating layers, it’s easy to make this dessert as you do other things.

The glasses used in this recipe are 4 oz. Of course, depending on the size of your glasses or dishes, you’ll want to adjust the size of your layers.

Rainbow Jell-o cups on a table.
Jell-O Gelatin Sampler

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Creating Layers of Jell-o

If you make your layers a touch too big, you won’t have enough room for all the colors. Little layers are key.

You also want to make sure to pour on each layer gently.

The warm Jell-o can easily melt the layer below it.

If you pour a fine stream, like from a spout, the more likely you are to break the layer.

Breaking a layer won’t destroy your dessert, but for the best appearance, you want to try to avoid doing so.

I suggest using a portion scoop to drizzle on each layer.

You can also use a spatula to help create layers.

Pour the Jell-o onto the spatula to help guide the liquid gently onto the layer while breaking the stream a bit.

Once you have the purple and white layers in your glass, set a timer for 15 minutes.

Make each color of Jell-o during your 15 minute time period.

Make the Jell-o, pour the layer, reset the timer for another 15 minutes.

Add a layer of white and return to the fridge for 15 minutes.

With this process – pouring, refrigerating for 15 minutes, making a color, pouring the white layer, and then refrigerating another 15 minutes – the colored Jell-o ends up sitting to cool for 30 minutes.

Cups of rainbow Jell-o layers on a table.

Rainbow Jell-o Cups Ingredients

  • 1 small box of each color Jell-o – red, orange, yellow, green, blue, and purple.
  • Flavors used here: cherry, orange, island pineapple, lime, berry blue, and grape.
  • Water
  • 1 14 oz can sweetened condensed milk
A collage of steps to make jello cups. Making the jello, coloring it, and layering it into the glasses.

Rainbow Cups Directions

  1. The first thing you want to do is clear a space in your fridge.
  2. It’s easiest to place the cups onto a baking pan, so make room for that.
  3. Add plain gelatin and 1/2 cup of cold water to a bowl.
  4. Let set for 5 minutes.
  5. Add 1 1/2 cups of boiling water and mix well until dissolved completely.
  6. Stir in sweetened condensed milk and mix well.
  7. Set aside to cool and start to make your first color.
  8. Mix grape Jell-o with 1 cup of boiling water and stir for about 2 minutes.
  9. Pour a small amount into your cups.
  10. Refrigerate for 15 minutes.
  11. Pour a small amount of white gelatin onto the purple and refrigerate for 15 minutes.
  12. While that layer sets, make your second color.
  13. You can let your Jell-o colors sit on the counter for 30 minutes. They will not set up.
  14. Repeat the layering process until you reach the last red color.
  15. Once the final layer is poured, refrigerate for 1-2 hours before serving.
Spoonful of rainbow layered Jell-o that shows all the colors.

Rainbow Jello Recipe Notes and FAQ

What is the best container to make Jello in?

Glass cups work best because the Jello is least likely to stick to them. 

Why would Jello not set?

You might not have thoroughly dissolved the powder in boiling water. If gelatin isn’t completely dissolved before adding cold water, it won’t set. 

Will Jello set if you add too much water?

It won’t if you leave the ratio the same. However, you can add another packet of mix to your Jello. warm it up until dissolved, and mix in more Jello.

More Rainbow Desserts to Make

Since this recipe is a lot of chilling, you can multi-task by making other rainbow treats for your party.

Yield: 10 servings

Rainbow Layered Jell-o Cups

Layered Jell-o rainbow cups

A creamy and delicious rainbow dessert. Rainbow Jell-o cups are great for any party, holiday, or event.

Prep Time 30 minutes
Fridge time 5 hours
Total Time 5 hours 30 minutes


  • 3 oz cherry Jell-o
  • 3 oz orange Jell-o
  • 3 oz island pineapple Jell-o
  • 3 oz lime Jell-o
  • 3 oz berry blue Jell-o
  • 3 oz grape Jell-o
  • water, divided
  • .5 oz unflavored gelatin, 2 packets
  • 14 oz sweetened condensed milk, 1 can


  1. Begin by finding a space in your refrigerator for all of your cups to refrigerate. I find it easiest to put the cups on a baking pan to bring them from fridge to counter to make these.
  2. Add gelatin and 1/2 cup of cold water in a bowl. Let set for 5 minutes. Add 1-1/2 cups boiling water and mix well until dissolved completely. Stir in sweetened condensed milk and mix well. Set aside to cool and make your first color.
  3. Mix grape jello with 1 cup of boiling water and stir for about 2 minutes or until completely dissolved. Gently pour a small amount into cup. Refrigerate for at least 15 minutes.
  4. Pour a small amount of white gelatin onto the purple and refrigerate for 15 minutes. While in the refrigerator, prepare your second color. You can let your jello colors sit on the counter for 30 minutes. They will not set up.
  5. Repeat, layering colors and a white layer, refrigerating each layer for 15 minutes. Use a portion scoop to drizzle the layers. It ends up being about 1 tablespoon for each layer.
  6. When complete with the red layer, refrigerate for 1-2 hours before serving.

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Nutrition Information:



Serving Size:

1 serving

Amount Per Serving: Calories: 285Total Fat: 5gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 18mgSodium: 134mgCarbohydrates: 56gFiber: 2gSugar: 51gProtein: 7g

Nutrition facts are an estimate only.

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There was some leftover Jello, so stained-glass Jello cubes were born! Be sure to check them out.

Please let me know if you make these rainbow Jell-o cups.

Jell-o layered into cups in a rainbow.

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Where will you serve these rainbow layers of deliciousness?

Angie Agerter

Monday 10th of February 2020

These are so fun! They are almost too pretty to eat.


Monday 10th of February 2020

Thank you, Angie!! Yes, but there is something very satisfying about breaking into those layers. :)


Wednesday 18th of December 2019

Those are beautiful! What a fun treat for a party or for St. Patrick's Day!

Lisa Joy Thompson

Wednesday 11th of December 2019

These are sooo fun! My kids would love them! These would be perfect for a party!


Monday 16th of December 2019

Thank you!! Hope you make them!

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