This easy and low-carb watermelon slushie recipe calls for only three ingredients for a tasty and refreshing summertime beverage that is free of refined sugar! Enjoy the slushie as-is or toss in a few extra add-ins for a whole new flavor spin. It's quick and simple, a light and thirst-quenching beverage that we'll be drinking all summer long (along with this sugar-free limeade!).
is watermelon keto friendly?
Watermelon is considered keto friendly since it is a low-carb fruit that also has a high water content. A ½ cup serving of watermelon only contains about 4-5 net carbs. Since there is no other added sugar or ingredients (other than water) in this watermelon slushie recipe, it's low in carbs and is keto friendly (also vegan, gluten-free, dairy free, all the things!)
the ingredient list
It's a short one, friends. You really only need two ingredients to make watermelon slushies- ice and watermelon. However, I like to add in a little bit of low-carb/keto sweetener and I'm also including a few options for different adaptations if you're looking for a fun (or boozy!) take.
- watermelon, chilled (choose seedless watermelon, cut into large cubes)
- ice cubes
- sweetener of choice (for drinks, I prefer a liquid sweetener like these monk fruit drops, stevia, or liquid allulose but you can also add in a couple of tablespoons of a granulated sweetener if that's what you have)
- optional add-ins like fresh mint, fresh basil, lime, or a low-carb alcohol of choice if you'd like to make a watermelon slush cocktail (keep reading)
And of course, a high-speed blender is a must.
let's make it
This is a basic watermelon slushie recipe that comes together in no time! While watermelon has a natural sweetness, it varies depending on the type of watermelon you buy and how ripe it is. Add sweetener to your liking (or omit it entirely).
How to make a watermelon slushie:
- Cut the watermelon. If you have a large watermelon, you'll need to cut about half of it into large cubes (if it's medium cut up the entire watermelon). You should end up with about 4-5 cups of cubed fruit.
- Blend. Transfer the watermelon cubes to the blender, add the sweetener (if using) and pour in 1 cup of ice. Blend for about 30 seconds to 1 minute, then check the consistency. Taste and adjust, adding more ice or sweetener as needed. (Add in any mint, basil, lime juice, etc. at this time).
- Serve. Pour the frozen watermelon drink into chilled serving glasses and garnish with mint leaves, fresh basil, or a slice of lime (optional).
Note: For the sake of simplicity, I prefer this method, blending the chilled watermelon with ice. However, you can make an even thicker slushie if you freeze the watermelon first, then blend it with ice/water until it reaches a consistency you like.
for a low-carb watermelon slush cocktail
This watermelon slushie recipe is a great one if you're looking to make a delicious and low-carb boozy beverage! I like to add tequila with a little lime juice, but you can also go with vodka or even mix it with some of this low-carb red sangria for a sangria slush.
If adding hard alcohol, start with ¼ cup (per batch of watermelon slushie) and add more- like ½ cup- if you'd like a stronger drink. Or mix in a shot of alcohol in each individual serving.
tips for making this recipe
- If you have a little extra in the blender that you'd like to keep chilled, place the entire blender container in the freezer for a short time. I prefer this over the refrigerator since the ice will melt and water down the drink. If the slushie ends up re-freezing to the point where it's not pourable, pulse it in the blender a few times to break it all up again.
- Choose a seedless watermelon. You can make it with any kind of watermelon but some melons end up being too "seed-y" and not as enjoyable to drink.
- For a really thick slushie, freeze the cubed watermelon for 2-3 hours, then blend it with 1 cup of water and add more ice/water as needed.
This frozen watermelon drink is so easy to make and is a treat for both kids and adults alike. Somehow, watermelon in drinkable form is even more refreshing than the fruit itself, and slushies are always a fun and welcome idea in the summer.
If you make this low-carb watermelon slushie recipe and love it too, I hope you consider leaving a comment and star review below or connecting with me on Instagram. As always, I appreciate your feedback!
you might also love...
- This tart and tasty homemade limeade recipe that's sugar-free, low-carb and keto friendly!
- Strawberry basil margarita is so cold and refreshing, it's almost slushie status.
- This simple keto key lime pie. It's vegan and no-bake and super creamy-delish. You'll be surprised by the ingredient list!
- ½ large seedless watermelon, cut into cubes, or a whole medium watermelon (about 4-5 cups)
- 2 cups ice
- liquid sweetener to taste (monk fruit, stevia drops, liquid allulose), optional
- optional garnishes or add-ins: fresh basil, fresh mint, lime slices/lime juice
- Cut the watermelon into large cubes and discard the rind. You should have about 4-5 cups of cubed fruit.
- Transfer the watermelon to the blender, add the sweetener (optional), and pour in 1 cup of ice. Blend for about 30 seconds to 1 minute, then check the consistency. Add the second cup of ice if needed, then blend another 30 seconds.
- If using fresh mint, basil, lime juice, etc., at it in at this time.
- Pour the slushie into chilled serving glasses and garnish with mint leaves, fresh basil, or a slice of lime (optional).
For a low-carb watermelon slush cocktail: Add ¼-1/2 cup of tequila or vodka to the slushie mix and blend. Alternatively, add 1 shot of alcohol to each individual serving.
For an extra thick slushie: Freeze the cubed watermelon for 2-3 hours, then blend it with 1 cup of water and add more ice and water as needed (along with the other ingredients), until it reaches a consistency you like.
If you have a little extra in the blender that you'd like to keep chilled, place the entire blender container in the freezer for a short time. If the slushie ends up re-freezing to the point where it's not pourable, pulse it in the blender a few times to break it all up again.
Nutrition Information:Yield: 5 Serving Size: 1
Amount Per Serving: Calories: 34Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 3mgCarbohydrates: 9gNet Carbohydrates: 8gFiber: 1gSugar: 6gProtein: 1g
This nutritional information is approximate and is provided for convenience as a courtesy.