Making a frozen watermelon limeade slushy in the Ninja Slushi machine is a great way to enjoy a refreshing treat with almost no effort.
This Ninja Slushi watermelon limeade slush has the perfect balance of sweet and tangy, made with just a couple of simple ingredients. It feels special, but is super easy to make!

Note: This post may contain affiliate links for your convenience. You can read our full disclosure policy here.
During the summer, fresh watermelon makes a regular appearance in our house. The juicy, ripe fruit is a nostalgic backdrop for hot, sticky days.
We love to make watermelon-flavored frozen treats, too, and have found that watermelon pairs really well with citrus.
The zippy, tart flavor of citrus enhances the natural sweetness of watermelon without overpowering it.
Since my family loves Ninja Creami watermelon lemonade sorbet, I decided to make a slushie using watermelon and citrus, but this time, with lime instead of lemon!
That’s how this Ninja Slushi watermelon limeade slush came to be, and it’s a hit in our home!
It’s super easy to make, with just two main ingredients. Add a sprig of fresh mint leaves to give it a little something extra!

Making Watermelon Limeade Slush
To make this slush, I decided to use a couple of juices from the Simply brand. I combined Simply Watermelon juice and Simply Limeade.
They’re easy to find in your local supermarket, and you can get at least a couple of batches out of the bottles.
I garnished mine with some fresh mint leaves, but you can also garnish with fresh fruit slices if you’d like.
More Ninja Slushi Recipes:
- Ninja Slushi Blue Raspberry Slush
- Apple Cider Slush in the Ninja Slushi
- Ninja Slushi Eggnog Milkshake
- Ninja Slushi Root Beer Slush
- Ninja Slushi Dole Whip Copycat Recipe
- Ninja Slushi Frosty Copycat Recipe
- Ninja Slushi Cherry Limeade Slush
- Ninja Slushi Fruit Punch Slush

How to Make Ninja Slushi Watermelon Limeade Slush
It’s really easy to whip up this summer favorite.
Ingredients You’ll Need:
- Simply Watermelon Juice
- Simply Limeade Juice
- Mint Leaves (for garnish)
How to Make It:
(Full printable recipe card is available below)
Mix the juices. First, you’ll combine the juices in a large liquid measuring cup with a spout. You can measure and add them separately if you prefer.
I use a measuring cup with a spout so it’s easier to pour everything into the machine.

Freeze and churn. Next, you’ll power the machine on and press the Slush button. Allow the juices to churn and freeze.

Dispense. Once the machine has beeped to signal its completion, pull down on the lever to dispense the slushie into glasses.
Garnish as desired and serve!

Notes and Adaptations:
- You can adjust the ratios of the juices if you’d like, but since limeade is stronger than watermelon juice, I used more watermelon and less lime to keep the flavors from overpowering each other.
- The amount of time it takes to freeze will depend on the temperature of your ingredients to start (colder ingredients freeze faster), as well as the consistency you prefer.
- Once the machine beeps to signal the mixture is ready, check the consistency. If it’s not as thick as you’d like, you can press the up arrow to increase the freeze level by one or two notches, if desired, then allow it to continue freezing.
- Check out our list of Ninja Slushi accessories for fun and practical items, as well as Slushi Superstars, our printable collection of Ninja Slushi recipes.

Recommended Equipment:
- Ninja Slushi Machine – Price and availability often varies, so I recommend checking the price here on Amazon and here at Walmart.
- Pyrex 4-Cup Measuring Cup – For easy mixing and pouring.
Ninja Slushi Watermelon Limeade Slush
Refreshing watermelon limeade slushy is easy to make in your Ninja Slushi machine. All you need is two ingredients and you can enjoy a drink that makes you feel like you're on vacation!
Ingredients
- 3 cups Simply Watermelon juice
- 1 cup Simply Limeade
- Optional: Fresh mint leaves or sliced fruit for garnish
Instructions
- Combine juices in a liquid measuring cup with a spout. Pour the mixture into the pour hole at the top of the Ninja Slushi machine.
- Power the machine on and press the Slush button. Allow the machine to churn and freeze the liquid.
- Once the machine beeps to signal completion, pull the lever to dispense the slush into glasses.
- Garnish each glass with fresh mint leaves, if desired, then serve and enjoy!
Notes
Nutrition Information:
Yield:
5Serving Size:
1 cupAmount Per Serving: Calories: 71Total Fat: 0gSaturated Fat: 0gUnsaturated Fat: 0gSodium: 3mgCarbohydrates: 18gFiber: 1gSugar: 16gProtein: 1g
Nutrition information is automatically calculated and is not guaranteed for accuracy.
Be sure to save this recipe to your Ninja Slushi board on Pinterest!


