This Red, White, and Blue Jello is an easy make-ahead dessert that’s perfect for patriotic gatherings. Bright strawberry and berry-blue jello cubes are suspended in a creamy sweetened condensed milk gelatin, so each slice looks like a little stained-glass mosaic. It’s fruity, refreshing, festive, and much simpler than trying to pour and chill multiple perfect layers.

Red White and Blue Stained Glass Jello
This recipe is a festive 4th of July version of classic broken glass (stained glass) jello: colorful jello cubes set in a sweet white gelatin base. The finished dish looks like a mosaic when sliced, but it’s straightforward to make. Prepare the red and blue jello ahead of time, cut them into small cubes, mix them together in a 9×13 dish, then pour a cooled condensed milk gelatin mixture over the top and refrigerate until set. The key detail is letting the white mixture cool to the touch before pouring so the colored cubes stay crisp and don’t melt or streak.
Because it needs ample chill time, this dessert is ideal for cookouts, potlucks, and holiday parties. Kids and adults both love the playful colors, and it keeps well in the refrigerator for a few days.
Helpful Tips and Variations
- Choose any red flavor. Strawberry is classic, but cherry or raspberry work nicely with berry blue for a fruity balance.
- Sugar-free option: You can use sugar-free red or blue jello if you prefer fewer calories.
- Use less water than the box suggests. This recipe uses only boiling water to dissolve each 6 oz. box, with no added cold water. Using less liquid produces firmer cubes that hold up well when mixed into the white layer.
- Set colored jello in shallow dishes. Pour the prepared red and blue jello into separate rectangular containers no more than about 1 inch deep. Thinner jello sets faster and is easier to cut into neat cubes.
- Cool the condensed milk mixture before pouring. It should be cooler than warm and roughly room temperature to avoid softening the colored cubes and causing streaks.
Red White Blue Jello

Equipment
- 2 shallow containers
- 9×13 glass dish
- Medium mixing bowl
Ingredients
- Nonstick spray
- 6 oz. box strawberry jello (or any red flavor)
- 6 oz. box berry blue jello
- 4 cups boiling water, divided
- 2 (0.25 oz.) envelopes unflavored gelatin
- 2 cups hot water
- 14 oz. can sweetened condensed milk
- 1 tsp clear vanilla (or regular vanilla)
Instructions
- Dissolve each 6 oz. box of jello in 2 cups boiling water per flavor. Pour each flavor into its own shallow container coated with nonstick spray, keeping the depth ideally no more than 1 inch.
- Chill until fully set, about 2–3 hours or overnight.
- Cut each flavor into small square cubes once completely firm.
- Coat a 9×13 glass dish with nonstick spray, add the cubes, and gently mix the two colors into an even layer, taking care not to tear them.
- In a medium bowl, sprinkle both envelopes of unflavored gelatin over 2 cups hot water and whisk to dissolve. Let cool slightly, then whisk in the sweetened condensed milk and vanilla until smooth.
- Allow the condensed milk mixture to cool to the touch (room temperature or just slightly warm). Pour evenly over the jello cubes so the mixture settles into the gaps without melting the cubes.
- Refrigerate overnight or until completely firm and sliceable.
- Cut into squares with a sharp knife (wiping the knife between cuts helps create clean edges) and serve chilled.
Notes
Red jello options: Strawberry, cherry, or raspberry all pair well with berry blue.
Vanilla choice: Clear vanilla keeps the white layer pure, but regular vanilla is fine if color is not a concern.
Nutrition
Nutritional information is an estimate and can vary depending on the exact products you use.
How to Make Red White Blue Jello Step by Step

Gather your ingredients and equipment before you begin. Working efficiently helps the colored jello cubes set smoothly and makes assembly easier.

Make the red and blue jello: Mix each 6 oz. box with 2 cups boiling water, stir until dissolved, and pour into separate shallow containers. Chill until firm — the jello should be glossy and spring back slightly when touched.

Slice into cubes: Cut each flavor into small, similarly sized cubes so each slice has a balanced mix of colors. Place cubes in a sprayed 9×13 dish and gently distribute them into an even layer.

Make the condensed milk mixture: Dissolve the unflavored gelatin in 2 cups hot water, cool slightly, then whisk in the sweetened condensed milk and vanilla until smooth.

Assemble and chill: Let the white mixture cool until it’s no longer warm, then pour it evenly over the jello cubes so it fills the spaces between them. Refrigerate overnight or until fully set and sliceable. For neat squares, use a sharp knife and wipe the blade between cuts. Serve chilled.

Serving Suggestions
Serve these jello squares chilled. They’re lovely on a patriotic dessert table and pair well with a small dollop of whipped cream or a scoop of vanilla ice cream. They also make a colorful addition to picnic spreads and holiday buffets.
How to Store Leftovers
Keep leftovers tightly covered in the refrigerator with plastic wrap or a lid to prevent drying and absorption of odors. The dessert stays best for up to 4 days. Freezing is not recommended, as thawing can alter the texture and make it watery or rubbery.
More Desserts for the 4th of July
- Red, white, and blue cookie or candy treats made from simple no-bake techniques.
- Layered or poke-style jello cakes that use similar flavors for a moist, colorful dessert.
- Fresh fruit kabobs in patriotic colors for a lighter option alongside jello squares.
- Snack mixes and sweet bars decorated in red, white, and blue for grab-and-go portions.
If you try this recipe, please consider leaving a review. Enjoy this easy, colorful, and crowd-pleasing cold dessert for your next holiday or gathering.