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Jiggly Stained-Glass Gelatin Cubes

After creating the rainbow gelatin cups, there was quite a bit of leftover gelatin. Not wanting to waste a single bit, it was a great opportunity to experiment with stained-glass gelatin.

If you need a colorful dessert for a unicorn party, baby shower, bridal shower, or any happy event, these layered cubes are a fun choice.

Rainbow jello cubes in a glass pan.

Rainbow stained-glass Jelly Cubes

Of course, you do not need to start with the rainbow gelatin cups in order to make stained-glass gelatin. These tasty layered rainbow jelly cubes are excellent to make on purpose.

These bites are loaded with flavor, a fun texture, and look impressive to all the lucky guests who get to eat them!

Bite out of a stained glass jello cube.

Switch up the colors to match your theme or use whatever you have on hand.

If you do end up with leftover gelatin from a different creation, simply layer what you have into a stained-glass looking jiggly treat.

Rainbow jello cubes on a plate.

What you need for stained-glass Gelatin

(exact ingredients in the recipe card below)

  • Small packages of six different colors of gelatin.
    • The following flavors were used here:
      • cherry
      • orange
      • island pineapple
      • lime
      • berry blue
      • grape
  • water
  • unflavored gelatin
  • sweetened condensed milk
Steps to make layered Jell-o cups.
These are the steps for the rainbow layered cups, but it’s the same concept.

Steps to make stained-glass gelatin

Mix purple packet with 1 cup of boiling water.

Stir well and pour into a 9 × 13 pan.

Refrigerate for 3 minutes.

Repeat with the remaining colors, pouring on top of each layer, ending with red.

Refrigerate for 1 hour.

Add gelatin and 1/2 cup of cold water in a bowl.

Let set for 5 minutes.

Add 1 1/2 cups of boiling water and mix well until completely dissolved.

Stir in the sweetened condensed milk and mix well.

Set aside for about 30 minutes to cool.

Holding a rainbow jello cube.

Cut gelatin into 1/2″ cubes and pour into a separate 9×13 pan.

Pouring condensed milk over jello.

Pour white gelatin over the rainbow gelatin and refrigerate for 2 hours or until firm.

Sweetened condensed milk over jello.

Cut into 32 cubes with a knife and serve.

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Recipe Notes and FAQ

Why is my gelatin watery?

Watery gelatin usually results from covering the mixture before it has cooled completely and set. Covering the gelatin allows liquid from condensation to drip down into the mix, causing it to have too much water to set properly. 

Should you grease a gelatin mold?

This recipe uses a simple glass dish, so no greasing is required. For molds that have edges and other fancy contours, spray the mold with a non-stick spray to keep it from getting stuck in the crevices. 

How long does gelatin last?

Gelatin will stay fresh for 7 to 10 days when covered and refrigerated. 

Does boxed gelatin go bad?

Unopened dry gelatin mix has an indefinite shelf life when stored at room temperature. However, if the package has been opened, the mix will only last for about 3 months. Check the box for a “best buy” date and try to use it by then for best results.  

Yield: 32 cubes

Stained-Glass Gelatin

rainbow jello cubes on a plate

Layer up some gelatin into colorful cubes that resemble stained-glass.

Prep Time 10 minutes
Additional Time 5 hours
Total Time 5 hours 10 minutes

Ingredients

  • 3 oz cherry gelatin
  • 3 oz orange gelatin
  • 3 oz island pineapple gelatin
  • 3 oz lime gelatin
  • 3 oz berry blue gelatin
  • 3 oz grape gelatin
  • water, divided
  • 2 packets, 0.25 oz each, unflavored gelatin
  • 1 can, 14 oz, sweetened condensed milk

Instructions

  1. Mix purple gelatin with 1 cup (0.24 l) boiling water. Stir well and pour into a 9×13 pan. Refrigerate for 30 minutes. Repeat with the remaining colors, pouring on top of each layer, ending with red. Refrigerate for 1 hour.
  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 for about 30 minutes to cool.
  3. Cut gelatin into 1/2" cubes and pour into a separate 9×13 pan. Pour white gelatin over rainbow jelly and refrigerate for 2 hours or until firm. Cut into 32 cubes with a knife and serve.

Notes

Feel free to leave out the sweetened condensed milk. The rainbow cubes are adorable as is, but the white background enhances the "stained-glass" look.

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Nutrition Information:

Yield:

32

Serving Size:

1

Amount Per Serving: Calories: 83Total Fat: 2gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 6mgSodium: 39mgCarbohydrates: 16gFiber: 1gSugar: 15gProtein: 2g

Nutrition facts are an estimate only.

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Gelatinous Creations

Rainbow Treats

Plates of stained-glass jello treats with rainbow colors.

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Let me know if you make stained-glass gelatin!

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