Rainbow Jello is a fun and colorful dessert that’s perfect for any occasion. It’s not just about the bright layers; it’s a nostalgic treat that brings back childhood memories for many of us. I remember making it with my family during summer barbecues, watching the vibrant colors come together layer by layer. Each spoonful is bursting with flavor and joy, making it a hit with both kids and adults. Plus, it’s a great way to get creative in the kitchen! You can customize it to fit any theme or personal preference, making it a versatile recipe worth keeping in your collection. So, let’s get started on making this delightful Rainbow Jello that’s sure to impress your friends and family!
Jump to:
- Why This Recipe Works
- Why You’ll Love This Rainbow Jello
- Ingredients
- Creating the Colored Layer
- Mix the First Layer
- Add Boiling Water
- Cool and Set
- Refrigerate
- Creating the White Layer
- Prepare the Condensed Milk Mixture
- Dissolve Gelatin
- Combine Mixtures
- Cool and Set
- Refrigerate
- Repeating Layers
- Repeat Color and White Layers
- Final Steps
- Chill Thoroughly
- Cut and Serve
- Serving Suggestions
- Tips for Success
- Variations
- Storage Tips
- Pairing Ideas
- FAQs
- How long does Rainbow Jello last in the fridge?
- Can I use different Jello flavors?
- How do I prevent the layers from mixing?
- Can I make this recipe vegan?
- Is it possible to use other dairy alternatives?
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Why This Recipe Works
Rainbow Jello is a visually stunning dessert that not only tantalizes the taste buds but also brings joy and nostalgia. The combination of colorful layers and creamy textures engages multiple senses, making it a delightful treat for any occasion. The use of unflavored gelatin gives strength and structure, allowing each layer to hold beautifully while the mixing technique ensures a smooth, cohesive blend.
Why You’ll Love This Rainbow Jello
This Rainbow Jello recipe transforms an ordinary dessert into an extraordinary experience. Whether it’s for a party, a festive celebration, or simply a fun family dessert, the vibrant colors and sweet flavors appeal to both kids and adults alike. Plus, the recipe is easy to customize, making it a versatile addition to your dessert repertoire.

Ingredients
- 3 oz package of the following Jello flavors (1 each): Strawberry, Orange, Lemon, Berry Blue, Grape
- 5½ tsp unflavored gelatin (approximately 2 packets)
- 1½ oz (14 oz can) sweetened condensed milk, divided
- 9 cups boiling water, divided
Creating the Colored Layer

Mix the First Layer
In a bowl, combine a 3 oz package of your chosen Jello flavor with 1 tsp unflavored gelatin. Stir thoroughly with a fork to ensure everything is well blended.
Add Boiling Water
Pour in 1 cup of boiling water into the mixture and stir continuously for about 1 minute. You want to make sure it’s fully dissolved and evenly mixed.
Cool and Set
Let the colored mixture cool for about 10 minutes. Carefully pour it into a 9×13 baking dish without disturbing the bottom layer.
Refrigerate
Place the dish in the refrigerator and allow the first layer to set for 30-45 minutes. This wait is essential for that perfect multi-layered effect.
Creating the White Layer
Prepare the Condensed Milk Mixture
In a shallow bowl, measure out ¼ cup of sweetened condensed milk. This will create a creamy layer that balances the sweetness of the Jello.
Dissolve Gelatin
Dissolve 1 tsp of unflavored gelatin in ½ cup of boiling water. Stir continuously until fully dissolved, ensuring no lumps remain.
Combine Mixtures
Pour the gelatin mixture into the condensed milk and mix until completely uniform. This should create a smooth, creamy mixture that will sit nicely on the colored layer.
Cool and Set
Let this mixture sit for 5-10 minutes to cool before gently pouring it over the first colored layer in the dish.
Refrigerate
Return the dish to the refrigerator and let it set for another 30-45 minutes. Patience is key here!
Repeating Layers
Repeat Color and White Layers
Continue this process for each remaining Jello flavor, layering them in the following order: Purple, Blue, Green, Yellow, Orange, and Red. With each new layer, make sure to cool the mixtures as needed.
Final Steps
Chill Thoroughly
Once all layers are in place, allow the Rainbow Jello to chill in the refrigerator for at least 4 hours or overnight for best results. This helps the flavors meld beautifully.
Cut and Serve
When ready to serve, cut the Jello into squares using a sharp knife. You can make 12 larger squares or cut them into 24 smaller cubes, depending on how you want to serve them.
Serving Suggestions
Serve your Rainbow Jello cubes on a colorful platter for parties or individual cups for easy serving. For an extra touch, pair them with whipped cream or fresh fruit to enhance the flavors.
Tips for Success
- Ensure each layer is completely set before adding the next layer to prevent them from mixing.
- Use room temperature ingredients to speed up cooling times.
- Keep an eye on your layers’ cooling to avoid setting issues.
Variations
Feel free to experiment with different flavored Jellos, adjusting the colors and textures. You might even try using flavored yogurt instead of condensed milk for a fruity twist or add fresh fruit pieces to the layers for added texture.
Storage Tips
Store any leftover Rainbow Jello in an airtight container in the refrigerator for up to 5 days. Avoid freezing, as it alters the texture and look.
Pairing Ideas
Consider pairing your Rainbow Jello with cake pops or fruit skewers for a fun dessert table setup. It also goes well with ice cream, creating a delicious layered sundae!
FAQs
How long does Rainbow Jello last in the fridge?
Rainbow Jello can last up to 5 days in the refrigerator when stored correctly in an airtight container.
Can I use different Jello flavors?
Absolutely! Feel free to mix and match any Jello flavors you love.
How do I prevent the layers from mixing?
Make sure each layer is completely set before adding the next. Allow sufficient time for each to cool in the fridge.
Can I make this recipe vegan?
Yes, you can replace the gelatin with agar-agar to make it vegan-friendly.
Is it possible to use other dairy alternatives?
Yes! Substitute sweetened condensed milk with coconut milk for a vegan option or with regular cream for a richer taste.
Rainbow Jello is more than just a dessert; it’s a chance to create lasting memories with your loved ones. Enjoy crafting this beautiful treat and watch as it becomes a favorite on your dessert table!
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Rainbow Jello
Rainbow Jello is a vibrant and fun dessert that combines colorful layers of fruity flavors with a creamy twist. It’s easy to make and a hit for parties!
- Total Time: 45 minutes
- Yield: 12-24 servings 1x
Ingredients
- 3 oz package of the following Jello flavors (1 each): Strawberry, Orange, Lemon, Berry Blue, Grape
- 5½ tsp unflavored gelatin (approximately 2 packets)
- 1½ oz (14 oz can) sweetened condensed milk, divided
- 9 cups boiling water, divided
Instructions
- Combine Jello flavor with unflavored gelatin and mix.
- Add boiling water and stir until dissolved.
- Cool and pour into a baking dish.
- Refrigerate to set for 30-45 minutes.
- Mix condensed milk and boiling water with dissolved gelatin.
- Cool and layer over the first set Jello layer.
- Repeat layering process with remaining colors and white layer.
- Chill thoroughly for at least 4 hours.
- Cut Jello into squares and serve.
Notes
Ensure each layer is set before adding the next for best results.
You can use different flavored Jellos for variety.
Store leftovers in an airtight container in the refrigerator for up to 5 days.
- Prep Time: 30 minutes
- Cook Time: 15 minutes
- Category: Dessert
- Method: Layering
- Cuisine: American
Nutrition
- Calories: 90
- Sugar: 17
- Sodium: 40
- Fat: 1.5
- Saturated Fat: 1
- Unsaturated Fat: 0
- Trans Fat: 0
- Carbohydrates: 19
- Fiber: 0
- Protein: 1
- Cholesterol: 5