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    Home » Beverage Recipes » Watermelon Smoothie

    Watermelon Smoothie

    Gluten & Grain Free RecipesLow Carb & Keto RecipesSugar Free RecipesTrim Healthy Mama Recipes

    Published: May 15, 2018 by Taryn

    This post may contain affiliate links which won’t change your price but will share some commission.
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    pinterest image for Watermelon Slammer

    This Watermelon Smoothie is the most refreshing summer beverage you will ever try. And, yes, it really is low carb and keto!

    a watermelon smoothie in a tall glass garnished with a fresh watermelon slice placed on the glass rim set next to a platter of watermelon slices

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    I spent many years working at Friendly's as a waitress. From when I was 17 off and on until I got married at 21. By the time I quit right before my wedding and college graduation, I knew what my menu favorites were. My favorite beverage was the Frozen Watermelon Slammer. It is made with watermelon sherbet and sprite. I've been craving one the past few years and I'm thrilled to now have a low carb and sugar-free watermelon smoothie alternative.

    close up on a watermelon smoothie in a tall glass garnished with a fresh watermelon slice and paper straw placed on the glass rim set next to a platter of watermelon slices

    My mom hates anything watermelon flavored (she does love real watermelon) but I love it. I also love anything cotton candy flavored and my favorite Italian Ice as a kid was banana. I remember getting it from the Italian Ice truck during summer camp. It was bright yellow and tasted like the bananas in Runts candy. I might be the only one in the world with that as their favorite. What is your favorite Italian ice or popsicle flavor? Tell me in the comments, I'd love to hear!

    a tall glass filled with a watermelon smoother with a fresh watermelon slice placed on the glass rim set next to a platter of watermelon slices

    When I found out that Lorann flavoring oils came in watermelon it made my day. (They do also come in cotton candy, banana, and a hundred other flavors). I can buy these at a local candy making store but they are also sold on Amazon. There are a few sellers that let you pick 12 different flavors for $15. I use the cinnamon oil in my Red Hot Gummies and the orange oil in my Creamsicle Gummies.

    Ingredients in the Watermelon Smoothie: sweetener, half and half or heavy cream, lemon-lime seltzer, watermelon flavoring oil, lemon extract, vanilla extract, ice cubes, xantham gum (optional, keeps the drink from separating)

    For another refreshing summer beverage, try my Sugar Free Lemonade, Keto Berry Smoothie, or Keto Pina Colada!

    close up overhead view on a watermelon smoothie in a tall glass garnished with a fresh watermelon slice and paper straw placed on the glass rim set next to a platter of watermelon slices

     

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    tall glass filled with watermelon smoothie with a slice of watermelon on the rim of glass

    Watermelon Smoothie

    This Watermelon Smoothie is the most refreshing summer beverage you will ever try. And, yes, it really is low carb and keto!
    Print Recipe Pin Recipe Rate Recipe
    Prep Time: 5 minutes
    Total Time: 5 minutes
    Course: Drinks
    Cuisine: American
    Servings: 1
    Calories: 39
    Author: Taryn

    Ingredients

    • 2 tablespoon Joy Filled Eats Sweetener (or see alternatives in recipe notes)
    • 2 tablespoon half and half or 1 tablespoon heavy cream
    • 6 oz lemon lime seltzer
    • 15 drops watermelon flavoring oil
    • 1 drop lemon extract
    • 1 drop vanilla extract
    • 8 ice cubes
    • pinch of xantham gum optional, keeps the drink from separating
    US Customary - Metric
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    Instructions

    • Combine all the ingredients in a blender and blend until smooth. Own it. You can add more of any of the ingredients to please your palate.

    Notes

    This has 1 gram of carbs with half and half and 0 grams of carbs with heavy cream.
    Notes on Sweeteners: 
    I use my own blend of xylitol, erythritol, and stevia in my recipes. This is twice as sweet as sugar. It is comparable to Trim Healthy Mama Gentle Sweet and Truvia.
    To sub in Swerve or Lakanto Monk Fruit use 1.5 times the amount of sweetener called for. 
     
    To sub in Pyure or Trim Healthy Mama Super Sweet use half the amount of sweetener called for.
     
    Substitutions will work in most recipes. They may not work in candies, such as caramel.

    Nutrition

    Calories: 39 | Carbohydrates: 1g | Protein: 0g | Fat: 3g | Saturated Fat: 2g | Cholesterol: 11mg | Sodium: 17mg | Potassium: 39mg | Sugar: 0g | Vitamin A: 105IU | Calcium: 31mg
    Tried this Recipe? Tag me Today!Mention @joyfilledeats or tag #joyfilledeats!

    Originally Published on May 21, 2016. Revised and Republished on May 15, 2018.

    pinterest image for Watermelon Slammer

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    Comments

    1. Kim says

      June 20, 2020 at 7:28 pm

      Do you think you could make this somehow with the True Lemon watermelon flavor?

      Reply
      • Taryn says

        June 21, 2020 at 11:43 am

        Good idea! I'm not sure how many packets but I think it would work.

        Reply
    2. Angelique says

      October 08, 2019 at 12:47 pm

      I really enjoyed reading about your fav flavors. My favorite memory was getting the banana or pistachio mini gelato cones from this Italian restaurant in Germany (where I grew up) that had a great little gelato stand in the front of the restaurant. mmmm I would love to recreate that keto someday. Now in TX this recipe looks perfect for our summer that lasts for over half the year.

      Reply
      • Angelique says

        October 08, 2019 at 12:49 pm

        Oh & I forgot to ask. Do you think this would be good to make into an alcoholic drink?

        Reply
        • Taryn says

          October 08, 2019 at 4:18 pm

          Sure. I'd use vodka since it is mild flavored.

    3. Stacey says

      July 10, 2017 at 1:02 pm

      I too was a fan of the Watermelon cooler at Friendly's, except I always ordered with water, I didn't like the fizz. I can't wait to try this!!!

      Reply

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