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Blue Raspberry Slush is the frosty, electric-blue drink that turns any hot afternoon into a party, made with just a few ingredients and a box of Jello. I first whipped this up for a backyard summer cookout and Maddie and Lizzie declared it the best frozen treat ever, blue tongues and all. It is just as refreshing as our Strawberry Limoncello Slush, minus the booze.
A box of berry blue Jello, a splash of lemon-lime soda, and a squeeze of fresh lemon freeze into a scoopable slush that you finish with more soda right in the glass.
Blue Raspberry Slush Quick Look
- 🕒 Prep Time: 5 minutes
- 🌡️ Cook Time: 0 minutes
- ⏳ Total Time: 4 hours 15 minutes
- 🍽️ Serving: 4 servings
- ⚡ Calories: 25kcal
- 🌶️ Flavor Profile: Sweet, tart blue raspberry with a bright lemon-lime fizz
- ✋ Difficulty: Easy, as simple as our 3 Ingredient Pink Punch
Quick Answer
Dissolve a box of berry blue Jello in 1 cup of boiling water, then stir in 1 cup of lemon-lime soda and the juice of half a lemon. Pour into a baking dish and freeze for at least 4 hours until solid. Scrape into glasses, fill the rest of the glass with more soda, and garnish with raspberries and a lemon slice for a frosty, electric-blue slush.
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Why This Recipe Works
Click to see the technique science
- Jello does the flavor and color. A box of berry blue Jello gives the slush its bold blue raspberry taste and signature electric color with zero food coloring needed.
- Soda keeps it scoopable. The sugar and carbonation in lemon-lime soda stop the mixture from freezing into a solid ice block, so it stays slushy and easy to scrape.
- Fresh lemon brightens it. A squeeze of lemon juice cuts the sweetness and adds that lemonade tang that balances the candy-sweet Jello.
- A shallow dish freezes faster. Spreading the mixture in a wide baking dish gives you more surface area, so it freezes quicker and scrapes into a finer slush.
- Finishing with soda in the glass. Topping each serving with fresh soda adds fizz and loosens the slush into the perfect drinkable texture.
- It is naturally kid-friendly. No alcohol means the whole family can enjoy it, and it is easy to make a boozy version for the grown-ups.
Why You’ll Love This Recipe
- Just a handful of ingredients and about 5 minutes of hands-on time, then the freezer does the rest.
- It is a total showstopper at cookouts and pool parties, like a frozen cousin of our Blueberry Lemonade Cocktail.
- Kids go wild for the bright blue color and you can easily spike it for the adults.
Key Ingredients
You only need a few simple ingredients to make this Blue Raspberry Slush, and the box of Jello does most of the work.
- Berry Blue Jello: The star that gives the slush its bold blue raspberry flavor and electric-blue color in one box.
- Lemon-Lime Soda: Adds fizz and just enough sugar to keep the slush soft and scoopable instead of icy.
- Fresh Lemon: A squeeze of juice brightens the flavor and adds a lemonade-like tang.
- Boiling Water: Dissolves the Jello completely so the slush has a smooth, even texture.
- Raspberries and Lemon Slices: An optional garnish that makes each glass look as good as it tastes.
See recipe card for exact quantities.
Variations and Substitutions
This Blue Raspberry Slush is easy to switch up for any crowd or occasion.
- Make it boozy: Add a shot of vodka or rum to each glass for an adults-only frozen cocktail.
- Swap the Jello flavor: Use cherry, lime, or strawberry Jello for a different color and taste.
- Use lemonade instead of soda: Finish the glass with chilled lemonade for an even more lemonade-forward slush.
- Make slush pops: Pour the mixture into popsicle molds before freezing for frozen treats.
- Go sugar-free: Use sugar-free Jello and diet soda to lighten it up.
How to Make Blue Raspberry Slush
- In an 8×11 or similar baking dish, combine 1 cup of boiling water with the box of berry blue Jello, stirring until the Jello is fully dissolved.
- Stir in 1 cup of lemon-lime soda and the juice from half a fresh lemon until evenly combined.
- Place the dish in the freezer and freeze for 4 hours or more, until the mixture is frozen solid.
- Remove from the freezer 10 to 15 minutes before serving, then scrape with a fork into a slush. Fill each glass halfway with slush and top with more lemon-lime soda.
- Garnish with fresh raspberries and a lemon slice, and serve right away with a straw or spoon.
Recipe Tips & Tricks
- Use a wide, shallow dish. More surface area means the mixture freezes faster and scrapes into a finer slush.
- Stir until the Jello fully dissolves. Any undissolved granules will make the slush gritty instead of smooth.
- Let it soften before scraping. Ten to fifteen minutes out of the freezer makes the frozen block easy to scrape.
- Scrape with a sturdy fork. A fork shaves the frozen mixture into fluffy slush better than a spoon.
- Top with soda right before serving. Adding soda in the glass keeps the fizz and gives the perfect drinkable texture.
- Make it ahead. Freeze the base up to a few days in advance, then scrape and serve whenever you are ready.
Serving Ideas and Suggestions
This Blue Raspberry Slush is made for hot weather and backyard parties. Set it out on a drink table next to our Best Large Batch Mojitos and Vodka Cherry Limeade so there is something frosty for everyone.
It is a hit at kids’ birthday parties, Fourth of July cookouts, and pool days. Pair it with other crowd-pleasers like our 3 Ingredient Pink Punch for a colorful drink spread.
Want a grown-up version? Add a splash of vodka and serve it alongside our Blueberry Lemonade Cocktail or a crisp White Wine Spritzer for the adults.
Blue Raspberry Slush FAQs
It tastes like sweet-tart blue raspberry candy with a bright lemon-lime fizz. The berry blue Jello provides that classic blue raspberry flavor, while the soda and fresh lemon add tang and bubbles.
No, this version is completely non-alcoholic and kid-friendly. To make an adult version, just add a shot of vodka, rum, or blue curacao to each glass before topping with soda.
If it freezes into a solid block, let it sit out for 10 to 15 minutes, then scrape it with a fork. The sugar and carbonation in regular (not diet) soda also help keep it scoopable rather than rock hard.
Yes. Freeze the Jello and soda base up to a few days in advance. When you are ready to serve, let it soften slightly, scrape into a slush, and finish each glass with fresh soda.
Any lemon-lime soda like Sprite or 7UP works great and keeps the blue color bright. Use regular soda rather than diet, since the sugar helps the slush stay soft and scoopable.
Absolutely. Berry blue gives you the signature blue raspberry look and taste, but cherry, lime, strawberry, or lemon Jello all work for a different color and flavor of slush.
Thirsty for more? Cool off with our Strawberry Limoncello Slush next.
Cool off all summer with our creamy Coconut Ice Cream.
Cool off with our copycat Chick Fil A frosted lemonade.
Thirsty for more easy sips? Cool off with this copycat Strawberry Acai Refresher next.
Blue Raspberry Slush
Ingredients
Instructions
- In an 8×11 or similar sized baking dish combine the boiling water and Jello until the Jello is dissolved.
- Stir in soda and lemon juice and freeze for 4 hours or more until frozen solid.
- Remove from freezer 10-15 minutes before serving.
- Fill your glass with half of the slush mixture and the other half with soda.
- Garnish with lemon slices and fresh raspberries.
Nutrition
Love This Recipe?
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Can you make an adult version of this with alcohol?
I make blue deviled eggs! I told my Granddaughters that a luck bluebird laid it ! and if they eat it they will be lucky too!
So yum perfect for my 4 kids ?
How many servings is this recipe thanks
Absolutely gorgeous! Thanks for sharing this *
How many serves does this make?
Thanks for sharing with Great Idea Thursdays. I’m featuring this in a Great Ideas Roundup.
You can definitely do this with any flavor of Jello, Millie!
Thanks so much for the kind words, Robyn. I hope you try the recipe soon!
Wow, this looks fantastic, Sara, and your photography is simply stunning! This will be a big hit this summer at parties. Thanks for a great recipe 🙂
Woot! You have been featured this week at Recipe Sharing Monday! The new link party is up and I’d love to see you back. Have a great week. 🙂
This looks like the perfect drink to have in hand on a hot day! I like this so much I’ll be including this a Summer Drinks roundup on my blog later this week! Thanks so much for sharing this at Frugal Crafty Home Blog Hop!
Yuuuuuuum!
ohh the son loves blue raspberry and this sure matches that color! This sounds so fun and guessing you could do with about any flavor? I am going to have to try this for sure and then we don’t have to go stand in line with all the bees at the slushy place! Thank you again for always sharing such awesome recipes!! Millie 🙂
hi! LOVE this jello slushie receipe and can’t wait to make it. Particularly beautiful in that lemon! I found your link on the Craftyblogstalker’s linky party and wanted you to know I love your site!