Why You’ll Love This Rainbow Jell O Cubes
Imagine creating a dessert that’s not only fun to make but also brings a burst of color and joy to any gathering. Rainbow Jell O Cubes are a playful treat that combines layers of vibrant, flavored gelatin with creamy goodness, making them a hit for kids and adults alike. You’ll appreciate how simple it is to whip up these cubes, turning basic ingredients into something magical in your own kitchen.
One of the biggest perks is the ease of preparation. With just a bit of stirring and chilling, you can have these cubes ready without needing fancy tools or hours of effort. They come together quickly, perfect for busy days when you want a homemade treat without much fuss.
Health-wise, these cubes offer benefits from gelatin, which supports joint health and provides protein. Each serving packs in nutrients like calcium and vitamin C, making it a lighter option compared to other desserts. Plus, you can tweak the recipe for dietary needs, like using low-sugar alternatives.
Versatility stands out too, as these cubes adapt to various occasions. Serve them at birthdays, holidays, or family dinners, and watch them disappear. Their distinctive flavor profile, blending fruity layers with smooth creaminess, sets them apart from plain gelatin, offering a textural delight that’s both wobbly and satisfying.
- Ease of preparation: This recipe requires only basic kitchen skills and minimal active time, with about 15 minutes of prep and around 4 hours of chilling, so you can multitask while it sets.
- Health benefits: Made with unflavored gelatin that aids digestion and bone health, plus options for low-calorie swaps, it’s a fun way to enjoy a treat with moderate calories at 135 per serving.
- Versatility: Easily modify for different diets, such as vegan versions, and pair with other desserts for events.
- Distinctive flavor: The mix of six fruity flavors creates a rainbow effect with a creamy twist, making each cube a tasty surprise.
For more sweet ideas, check out our Strawberry Cheesecake Dip Recipe on the blog, which pairs perfectly with these cubes for a party platter.
Jump to:
- Why You’ll Love This Rainbow Jell O Cubes
- Essential Ingredients for Rainbow Jell O Cubes
- Main Ingredients
- Special Dietary Options
- How to Prepare the Perfect Rainbow Jell O Cubes: Step-by-Step Guide
- First Step: Prepare the Bottom Layer
- Second Step: Make the White Layer
- Third Step: Add the Next Colored Layer
- Fourth Step: Continue Layering
- Fifth Step: Finalize and Cut the Cubes
- Dietary Substitutions to Customize Your Rainbow Jell O Cubes
- Protein and Main Component Alternatives
- Vegetable, Sauce, and Seasoning Modifications
- Mastering Rainbow Jell O Cubes: Advanced Tips and Variations
- How to Store Rainbow Jell O Cubes: Best Practices
- FAQs: Frequently Asked Questions About Rainbow Jell O Cubes
- How do you make rainbow Jell-O cubes?
- Is it hard to make layered rainbow Jell-O?
- What if the white layer starts setting too soon in rainbow Jell-O?
- What’s the best way to cut rainbow Jell-O into cubes?
- How long does rainbow Jell-O last and how to store it?
- Rainbow Jell O Cubes
- Ingredients
- Instructions
- Last Step:
- Notes
- Nutrition
- Did you make this recipe?
Essential Ingredients for Rainbow Jell O Cubes
Main Ingredients
- Six 3-ounce packages of flavored gelatin: Berry Blue, Lime, Lemon, Orange, Grape, and a red flavor such as Raspberry, Cherry, or Strawberry – These create the colorful layers, providing vibrant hues and fruity tastes that make the cubes visually appealing and flavorful.
- Five and a half 1-ounce packages of unflavored gelatin – This helps the layers set firmly, ensuring the structure holds without melting easily, and adds a protein boost for a healthier snack.
- One and a half 14-ounce cans of sweetened condensed milk – This gives the white layers their creamy texture and sweetness, balancing the tartness of the flavored gelatin for a delightful contrast.
- Eight and a half cups of water – Used for dissolving the gelatin, this ensures the mixtures are smooth and properly set, with boiling water helping to activate the gelatin quickly.
Special Dietary Options
- Vegan: Swap sweetened condensed milk with a plant-based alternative like coconut milk or almond milk mixed with a sweetener, keeping the creamy layers intact while making the recipe dairy-free.
- Gluten-free: All ingredients listed are naturally gluten-free, so no substitutions are needed, making this a safe choice for those with gluten sensitivities.
- Low-calorie: Use sugar-free flavored gelatin and a reduced-sugar condensed milk option to cut down on sugar and calories, while still enjoying the fun layers.
How to Prepare the Perfect Rainbow Jell O Cubes: Step-by-Step Guide
Rainbow Jell O Cubes are all about patience and precision, resulting in a stunning dessert that’s worth the wait. Start by gathering your ingredients and a 9 by 13-inch pan to build those beautiful layers. This guide walks you through each step, ensuring your cubes turn out vibrant and delicious every time.
First Step: Prepare the Bottom Layer
Begin with the purple layer by dissolving one 3-ounce package of grape flavored gelatin along with 1 teaspoon (half of a 1-ounce package) of unflavored gelatin in 1 cup of boiling water. Stir until everything is completely dissolved, then pour it into your 9 by 13-inch pan. Place the pan in the refrigerator on a flat surface and let it chill until set, which takes about 30 minutes.
Second Step: Make the White Layer
While the first layer sets, prepare the white layer by stirring 2 teaspoons (one full 1-ounce package) of unflavored gelatin into 1 cup of boiling water until fully dissolved. Add half of a 14-ounce can of sweetened condensed milk and stir well to combine. Allow this mixture to cool to room temperature, but don’t let it set yet this usually takes about 10-15 minutes.
Third Step: Add the Next Colored Layer
Once the purple layer is firm, move on to the next color in the rainbow order, which is Berry Blue. Dissolve another 3-ounce package of flavored gelatin with 1 teaspoon of unflavored gelatin in 1 cup of boiling water, stirring until dissolved. Let this cool slightly before pouring. Then, pour about three-quarters of a cup of the cooled white mixture over the set colored layer, tilting the pan gently to spread it evenly. Refrigerate for about 20 minutes until it sets.
Fourth Step: Continue Layering
Keep alternating between the colored layers and the white layers, following the rainbow order: after Berry Blue, go to Lime, then Lemon, Orange, and finally the red flavor. For each colored layer, use the same method as the first, preparing it fresh each time and letting it cool before adding. You’ll need to make the white layer multiple times as it sets quickly at room temperature, so prepare just enough for each use. Each layer should chill for 20-30 minutes to ensure they don’t mix.
Fifth Step: Finalize and Cut the Cubes
After all layers are added and fully set which might take around 4 hours total chilling time it’s time to slice. Use a paring knife to cut the gelatin into one-inch squares for clean edges. Gently lift the cubes from the pan using a small spatula to avoid squishing them. This step ensures your cubes look neat and are easy to serve.
The total preparation time is about 15 minutes of active work, plus the additional chilling, making for roughly 4 hours and 15 minutes overall. For more gelatin ideas, visit our Chocolate Lasagna Recipe, which uses similar layering techniques.
| Nutrient | Amount per Serving |
|---|---|
| Calories | 135 |
| Carbohydrates | 25g |
| Protein | 6g |
| Fat | 2g (Saturated Fat: 1g) |
| Cholesterol | 6mg |
| Sodium | 110mg |
| Sugar | 24g |
| Calcium | 58mg |
| Iron | 1mg |
| Vitamin A | 50 IU |
| Vitamin C | 1mg |
Dietary Substitutions to Customize Your Rainbow Jell O Cubes
Protein and Main Component Alternatives
If you’re looking to switch things up, try using different gelatin options for the main layers. For a vegan twist, replace animal-based gelatin with agar powder in the same quantities to keep the layers firm and wobbly.
Vegetable, Sauce, and Seasoning Modifications
Adapt the white layer by swapping sweetened condensed milk with coconut milk for a dairy-free version, which adds a tropical flavor. For seasonings, experiment with adding fruit purees to the colored layers to enhance natural tastes without extra sugar.
Mastering Rainbow Jell O Cubes: Advanced Tips and Variations
To take your Rainbow Jell O Cubes to the next level, focus on pro cooking techniques like cooling each layer properly to avoid blurry edges. For flavor variations, mix in fresh fruit juices with the gelatin for a zestier bite. Presentation tips include arranging cubes in a rainbow pattern on a platter for eye-catching appeal. Make-ahead options let you prepare these up to a day in advance and store them covered in the fridge.
Remember, layer timing is key to prevent sliding, as shared in our tips section.
How to Store Rainbow Jell O Cubes: Best Practices
Proper storage keeps your Rainbow Jell O Cubes fresh and tasty. For refrigeration, place them in an airtight container and keep in the fridge for up to 5-7 days to maintain their wobble. Freezing isn’t recommended as it can make the texture mushy, so stick to short-term options. For meal prep, cut cubes ahead and store in layers with parchment paper to avoid sticking.
Learn more about gelatin’s perks via this health benefits of gelatin resource.

FAQs: Frequently Asked Questions About Rainbow Jell O Cubes
How do you make rainbow Jell-O cubes?
Is it hard to make layered rainbow Jell-O?
What if the white layer starts setting too soon in rainbow Jell-O?
What’s the best way to cut rainbow Jell-O into cubes?
How long does rainbow Jell-O last and how to store it?

Rainbow Jell O Cubes
🌈 Delight in this layered rainbow jello for a vibrant, no-bake dessert that dazzles at parties or kids’ events, creating stunning colorful cubes with creamy white layers for visual appeal and fun textures.
🍮 This make-ahead recipe uses simple gelatin mixes and condensed milk for a sweet, jiggly treat that’s easy on the budget and perfect for celebrations, offering a refreshing, nostalgic option with minimal active time.
- Total Time: 4 hours 15 minutes
- Yield: 20 servings
Ingredients
– Six 3-ounce packages of flavored gelatin: Berry Blue, Lime, Lemon, Orange, Grape, and a red flavor such as Raspberry, Cherry, or Strawberry for colorful layers
– Five and a half 1-ounce packages of unflavored gelatin to help the layers set firmly
– One and a half 14-ounce cans of sweetened condensed milk for white layers creamy texture and sweetness
– Eight and a half cups of water for dissolving the gelatin
Instructions
1-First Step: Prepare the Bottom Layer Begin with the purple layer by dissolving one 3-ounce package of grape flavored gelatin along with 1 teaspoon (half of a 1-ounce package) of unflavored gelatin in 1 cup of boiling water. Stir until everything is completely dissolved, then pour it into your 9 by 13-inch pan. Place the pan in the refrigerator on a flat surface and let it chill until set, which takes about 30 minutes.
2-Second Step: Make the White Layer While the first layer sets, prepare the white layer by stirring 2 teaspoons (one full 1-ounce package) of unflavored gelatin into 1 cup of boiling water until fully dissolved. Add half of a 14-ounce can of sweetened condensed milk and stir well to combine. Allow this mixture to cool to room temperature, but don’t let it set yet this usually takes about 10-15 minutes.
3-Third Step: Add the Next Colored Layer Once the purple layer is firm, move on to the next color in the rainbow order, which is Berry Blue. Dissolve another 3-ounce package of flavored gelatin with 1 teaspoon of unflavored gelatin in 1 cup of boiling water, stirring until dissolved. Let this cool slightly before pouring. Then, pour about three-quarters of a cup of the cooled white mixture over the set colored layer, tilting the pan gently to spread it evenly. Refrigerate for about 20 minutes until it sets.
4-Fourth Step: Continue Layering Keep alternating between the colored layers and the white layers, following the rainbow order: after Berry Blue, go to Lime, then Lemon, Orange, and finally the red flavor. For each colored layer, use the same method as the first, preparing it fresh each time and letting it cool before adding. You’ll need to make the white layer multiple times as it sets quickly at room temperature, so prepare just enough for each use. Each layer should chill for 20-30 minutes to ensure they don’t mix.
5-Fifth Step: Finalize and Cut the Cubes After all layers are added and fully set which might take around 4 hours total chilling time it’s time to slice. Use a paring knife to cut the gelatin into one-inch squares for clean edges. Gently lift the cubes from the pan using a small spatula to avoid squishing them. This step ensures your cubes look neat and are easy to serve.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
❄️ Cool each colored gelatin mixture slightly before pouring over set layers to avoid melting previous ones, ensuring sharp, distinct colors and no cloudiness in the final rainbow effect.
🔪 Use a sharp paring knife to score and cut the set gelatin for precise 1-inch cubes with clean edges, making it easier to lift without breaking the delicate layers.
⏰ Prepare the creamy white mixture fresh for each addition, and if it begins to set, gently warm the bowl in hot water while stirring to restore liquidity without altering consistency.
- Prep Time: 15 minutes
- Chilling Time: 4 hours
- Category: Dessert
- Method: No-Cook
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 3-4 cubes
- Calories: 135 kcal
- Sugar: 24 g
- Sodium: 110 mg
- Fat: 2 g
- Saturated Fat: 1 g
- Unsaturated Fat: 1 g
- Trans Fat: 0 g
- Carbohydrates: 25 g
- Fiber: 0 g
- Protein: 6 g
- Cholesterol: 6 mg






