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Home » Beverage Recipes » Mocktail Recipes

Watermelon Slushie Mocktail

Published: May 16, 2022 by Emma · This post may contain affiliate links, which can earn us a commission.

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What can be more refreshing than a frozen drink on a hot day?  It's so nice to relax with a delicious watermelon slushie mocktail in hand!  But hey, it's surprisingly simple to make.  All you need is a few simple ingredients and a blender!

Love slushies? Don't miss out on our frozen cherry limeade and frozen strawberry lemonade. You'll also love our virgin strawberry daiquiri!

person holding a glass of watermelon slushie
Jump to:
  • Why This Recipe Works
  • Ingredients
  • How to Make
  • Recipe FAQs
  • Serve
  • Store
  • Expert Tips
  • Other Non-Alcoholic Drinks to Try
  • Recipe
  • Watermelon Slushie Mocktail
  • Comments

Why This Recipe Works

  • The fruit is frozen. This eliminates the need for ice, which would dilute the flavors and texture of the drink.
  • It uses freshly squeezed lime juice. Bottled lime juice doesn't have as bright and fresh of a flavor, so using it in this drink won't taste as good as freshly squeezed.

Ingredients

bowls of ingredients for watermelon slushie

This watermelon slushie takes only four simple ingredients (five if you include water for blending). Let's talk about each one!

  • Watermelon: Start by cubing half of a watermelon, discarding the rind and seeds, then spread it on a cookie sheet and freeze it. I like to freeze the cubed melon overnight to make sure it's really frozen. Use a seedless melon for fewer seeds.
  • Frozen Strawberries: These berries add a touch of sweetness and a little more flavor than using watermelon only.
  • Lime Juice: Make sure to freshly squeeze your own with a citrus press or reamer for the best flavor. Bottled juice never tastes as good!
  • Sugar: Although fruit is sweet already, adding a little sugar enhances the flavors. Feel free to substitute with your favorite sweetener.

See recipe card for full information on ingredients and quantities.

How to Make

Gather the ingredients for the watermelon slushie.

cubed watermelon on a cutting board and frozen
  1. Start the prep work by cubing about half of a large watermelon. Discard the seeds for smoother textured drink if you would like.
  2. Spread the cubed melon on a cookie sheet and freeze for at least 2 hours, but preferably overnight.
lime press with watermelon and sugar in a blender

3. Meanwhile, juice the fresh limes using a citrus press or reamer.

4. Place a little of the frozen melon into a powerful blender and pour in the sugar and lime juice. Blend on low speed until combined.

adding frozen watermelon to blender and blending

5. Gradually add the frozen strawberries and remaining frozen melon and blend on low speed until the slushie is smooth and thick.

6. You will need to add water periodically to help the blender crush the frozen fruit.

person garnishing a slushie with a slice of watermelon

7. Pour the slushies into glasses and garnish with a small watermelon slice.

8. Enjoy these watermelon slushies right away before they melt!

Recipe FAQs

Does Sonic still have watermelon slush?

No, unfortunately Sonic discontinued this drink back in 2019, much to the disappointment of many fans. However, you can make your own at home!

How do you make watermelon juice?

Watermelon juice is one of the key ingredients in this frozen summer drink! Making it is super easy: just purée fresh melon in a blender or food processor until smooth. If you want to drink the juice by itself, you can pour the juice through a sieve to remove the pulp and seeds.

How do you make a watermelon slushie?

For this watermelon slushie, blend together all the ingredients in a powerful blender on low speed until they are smooth. Add water as needed to help the blender crush the ingredients.

Can I make this watermelon slushie ahead of time?

Yes, you can blend this slushie in advance and store it in the freezer. Take it out about 45 minutes before you want to drink it. Break it down into a slushie texture with a fork as it thaws.

Serve

Looking for other frozen summer drinks? You'll definitely want to try our recipes for raspberry daiquiri, frozen mango daiquiri, virgin strawberry margarita, and frozen jalapeño margaritas.

Store

To keep this drink as a slushie, you'll need to freeze any leftovers in a freezer-safe container, like a plastic ice cream tub. Thaw at room temperature and break it up with a fork until it has the desired texture.

Expert Tips

  • Squeeze your own lime juice for the best flavor.
  • If the slushie is too thick, add a little water or additional lime juice.
  • If the slushie isn't thick enough, blend in crushed ice or freeze it for a few hours, then break up the icy clumps until smooth.
  • This slushie melts quickly, so store it in the freezer until ready to serve.

Other Non-Alcoholic Drinks to Try

  • person holding a glass of piña colada
    Virgin Piña Colada
  • two glasses of virgin strawberry daiquiri
    Virgin Strawberry Daiquiri
  • collage of mocktails for New Year's Eve
    11 Mocktails for New Year's Eve
  • two glasses of frozen virgin lime margarita
    Frozen Virgin Margarita Recipe

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Recipe

two glasses of watermelon slushie with a bowl of watermelon

Watermelon Slushie Mocktail

Watermelon slushie mocktail is a healthy-ish drink recipe your family will love!  Frozen watermelon, lime juice, sugar, and frozen strawberries blend together to create this refreshing, nonalcoholic summer drink.
4.5 from 8 votes
Print Pin FavoriteSaved! Rate
Course: Beverages
Cuisine: American
Prep Time: 15 minutes minutes
Total Time: 15 minutes minutes
Servings: 7 cups
Calories: 105kcal
Author: Brooke & Emma

Ingredients
 

  • 5 ⅔ cups watermelon, cubed
  • 1 ½ cup frozen sliced strawberries
  • ½ cup granulated sugar
  • ⅓ cup freshly squeezed lime juice

Instructions

  • Slice half of a large melon, discarding the rind and seeds.  Cube up 5 ⅔ cups of melon (1.1 kg) and spread it out in a single layer on a large cookie sheet.  Freeze for at least 1-2 hours, but preferably overnight.
  • Place some of the frozen watermelon along with the freshly squeezed lime juice and the sugar in a powerful blender.  Blend on low speed until combined, then gradually blend in the remaining melon and the frozen strawberries.  You'll need to add water occasionally to help the blender crush the fruit.
  • Taste the drink and add more sugar or lime juice if desired.  Adjustments may be needed depending on the sweetness of the fruit used.
  • Pour into 14-ounce glasses and garnish with a small watermelon slice on the rim of the glass and paper straws.  Serve immediately, or pour into a pitcher and store in the freezer until ready to serve.

Notes

  • Squeeze your own lime juice with a citrus press or reamer for the best flavor.
  • If the slushie is too thick, add a little water or additional lime juice.
  • If the slushie isn't thick enough, freeze it for an hour or two; then break up the icy clumps until smooth.
  • This drink melts very quickly, so store it in the freezer until ready to serve.

Nutrition

Serving: 1cupCalories: 105kcal (5%)Carbohydrates: 27g (9%)Protein: 1g (2%)Fat: 1g (2%)Saturated Fat: 1g (6%)Polyunsaturated Fat: 1gMonounsaturated Fat: 1gSodium: 2mgPotassium: 199mg (6%)Fiber: 1g (4%)Sugar: 24g (27%)Vitamin A: 710IU (14%)Vitamin C: 32mg (39%)Calcium: 15mg (2%)Iron: 1mg (6%)

Serving sizes and nutritional information are only an estimate and may vary from your results.

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Reader Interactions

Comments

  1. Amada

    June 12, 2021 at 1:17 pm

    5 stars
    Sounds really good, I'll make sure I'll try it!

    Reply
    • Emma

      June 12, 2021 at 4:56 pm

      I hope you enjoy the slushie, Amada!

      Reply
  2. Alex

    June 04, 2021 at 11:36 am

    5 stars
    The sweet watermelon is juicy and nice. The drink is smooth and the flavors are great. Yum, yum!

    Reply
    • Emma

      June 04, 2021 at 11:40 am

      Thanks for your kind review, Alex!

      Reply
  3. Beth

    October 16, 2019 at 11:38 am

    5 stars
    This is a lovely cold drink that is perfect for a hot, humid day. The sweet watermelon in it is yummy!

    Reply
    • Emma

      October 16, 2019 at 12:21 pm

      I'm so glad that you enjoyed it, Beth!

      Reply

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Welcome to our kitchen! We're Brooke & Emma, the mother-daughter team behind Savor the Flavour. As self-taught cooks and bakers, we love to inspire you to cook from scratch with real food! Increase your kitchen confidence with our recipes, instructional photos, and helpful tips and facts.

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