Blend up a watermelon mint slushie to keep you cool on a hot summer day! Made with fresh watermelon and mint, these slushies are refreshing, cooling, and the perfect summer treat.
Looking for a sweet treat to cool you down? Make a batch of watermelon mint slushies - the entire family will love them!
Frozen watermelon is blended with fresh mint and lime juice to make these sweet frozen drinks. Tiny green flecks of mint float throughout your slushie, adding the most refreshing and cooling flavor.
Enjoy a watermelon mint slushie while lounging poolside, to cool off after a hot day outside, or any time you're looking for a refreshing and fruity treat.
Or, try my adults-only watermelon cocktail recipe for your next party!
Ingredients and substitutions
Watermelon - For this recipe, you'll need fresh cubed watermelon, which we'll be freezing. Try to pick the freshest, juiciest, and best in-season watermelon you can find. In-season fruit has a far superior flavor and sweetness.
Limes - I recommend using fresh limes if possible. The flavor is bright, fresh, and all-around superior. However, fresh lime juice can be substituted with bottled lime juice if needed.
Fresh mint - Makes these slushies extra refreshing and bright, but it can be omitted if desired.
Maple syrup - Can be substituted with any sweetener you have on hand, like granulated sugar, brown sugar, or honey. If your watermelon is extra sweet, you may not need to add any sweetener at all.
Freezing fresh watermelon
To make your slushies, you'll first need to freeze your cubed watermelon. Slice your watermelon into cubes and spread in a single layer on a parchment lined baking sheet. Freeze for up to 2 hours, or until solid.
Frozen watermelon can be stored in an airtight freezer-safe container until ready to use. Frozen watermelon will keep for up to a year in the freezer when properly stored.
Do I have to freeze the watermelon?
I tested this recipe with a combination of fresh watermelon and ice (instead of freezing the watermelon). The ice alone was not enough to give the drinks a slushy texture. Freezing your watermelon is definitely the way to go!
Can homemade slushies be frozen for later?
For best texture, I recommend enjoying your slushies straight from the blender. They will melt over time, just like any other frozen treat.
If you want to save some of your slushie mixture for later, it can be frozen for up to 2 hours and still have a scoopable texture (more like a sorbet than a slushy). Longer than two hours and your homemade slushie will freeze into a solid block.
Watermelon Mint Slushie
- 16 ounces seedless watermelon, cubed
- ¼ cup lime juice, the juice of about 2 limes
- 8-10 mint leaves
- 1 tablespoon maple syrup, optional
- ½ cup water
- Line a sheet pan with parchment paper. Spread cubed watermelon into a single layer. Freeze for 2 hours, or until solid.
- In a blender, add lime juice, mint, frozen watermelon, sweetener (optional - add to taste. In-season watermelon may be sweet enough on its own), and half of your water. Blend until smooth, adding additional water as needed to achieve your desired slushy consistency.
- ¼ of a large seedless watermelon = about 32 ounces of cubed watermelon
- Maple syrup can be substituted with any sweetener you have on hand (granulated sugar, honey, brown sugar) and can be omitted if your watermelon is in-season and very sweet. Out of season watermelon will need the added sweetener.
- Your homemade slushie can be frozen for up to 2 hours, but will freeze solid over time.