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Tomato, Watermelon and Cucumber Keto Gazpacho – Low Carb Recipe

My tastebuds love a good chilled soup in the summer and what ingredient is more quintessentially summer than watermelon?  You may not think of watermelon as being particularly keto-friendly, but it all depends on your personal goals, macros and the quantity you eat. Having seasonal whole foods, including fruit, as part of your keto diet makes adds variety. Ultimately, variety can make this lifestyle more sustainable.  This chilled Tomato, Watermelon, and Cucumber Keto Gazpacho recipe is perfect for those hot days when you want something light and satisfying.

Bursting with juicy tomatoes, crisp cucumbers, and sweet watermelon, this flavorful soup is a feast for both your eyes and your palate. The presentation is really beautiful and makes a perfect light summer meal along with some grilled chicken or fish.

So grab your blender and let’s dive into the world of keto gazpacho. It’s a refreshing delightful dish that will keep you cool all summer long! Once you try this recipe, it’ll become an instant favorite.

Speaking of instant favorites, if you could use a blender upgrade, Vitamix always has some great offers when you use my link! I’ve had mine for over 15 years now and it’s one of the best kitchen investments I’ve made.

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Ingredients for Keto Gazpacho

First, you’ll need some ripe tomatoes, extra bonus points if you grew them or can find some fresh local tomatoes. Next up, grab a juicy watermelon to add some sweetness and extra hydration to your soup. Don’t forget that cucumber! They’ll give your gazpacho that crisp and cool factor.

You can easily reduce some of the carbs in this soup by reducing the watermelon and subbing in more cucumber for a keto gazpacho that’s still really refreshing. The only issue I noticed with this is it makes the color of the gazpacho slightly less appealing but if that doesn’t bother you, feel free to try this hack.

A few more essentials make this soup extra tasty. Fresh garlic, shallot and a little jalapeno give this keto gazpacho a little kick.

To bring all these incredible flavors together, you’ll need high-quality extra virgin olive oil.  It adds richness and depth to every spoonful along with making a nice garnish for the presentation.

Keto Gazpacho Instructions

Now that we have gathered all the fresh and juicy ingredients, it’s time to whip up a delicious batch of Tomato, Watermelon, and Cucumber Gazpacho! This recipe is super easy, you don’t have to precisely chop everything since most of it is going in the blender.

Other Low-Carb Soup Recipes

If you’re a fan of low-carb soups, then you’re in luck!  We have many listed here, and a few of our summer favorites are below.

1. Creamy Raw Zucchini and Avocado Chilled Soup: I’ve been making this one for years, going all the way back to when I was vegetarian (GASP!) It’s super easy, delightfully creaming and perfect for summer.

2. Chilled Cucumber Feta Soup: This is another cold summer favorite summer soup that was inspired by a dish eaten poolside on our honeymoon. The feta and cucumber pair perfectly and it’s so refreshing!

3. Triple Meat Carnivore Chili: You may not think of chili as a summer dish, but I really love it any time and this is one fo the most popular recipes on our site. Really great for football weather or for feeding a crowd, but I often have it in the summer too for an easy, hearty meal. 

So there you have it,  some fantastic options if you want to explore more low carb soups beyond gazpacho!  Remember that eating low carb doesn’t mean sacrificing flavor or variety in your meals. 

Tomato, Watermelon and Cucumber Gazpacho – Low Carb Recipe

Prep Time: 15 minutes
Refrigeration: 6 hours
Total Time: 6 hours 15 minutes
Servings: 6

Ingredients  

  • 4 cups cubed watermelon, set aside 1 cup
  • 4 cups diced tomatoes, set aside 1 cup
  • 1 ½ cup diced cucumber, set aside 1/2 cup
  • 1 clove garlic
  • 1 large shallot
  • ½ cup basil leaves, lightly packed, plus extra for garnish
  • 2 teaspoons sea salt
  • 3 tablespoons extra virgin olive oil, plus extra for garnish
  • 1 tablespoon diced jalapeno, plus extra for garnish
  • 6 tablespoons feta cheese, for garnish
  • diced avocado, for garnish, optional

Instructions

  • Chop all the vegetables, setting aside a cup each of watermelon and tomato as well as a half cup of cucumber.
  • Place 3 cups of watermelon, 3 cups of tomatoes, 1 cup of cucumber, garlic, shallot, basil leaves, salt, pepper, olive oil and jalapeno in the blender and mix until completely pureed.
  • Chill soup for at least 6 hours or until cold, easiest to do it the day before and refrigerate overnight or in the morning so it's cold for an evening meal.
  • Pour the soup in to bowls and place the reserved mixture of tomatoes, watermelon and cucumber in the center.
  • Top the vegetable mound with a tablespoon of feta cheese, basil, jalapeno and avocado, if using. Lightly drizzle olive oil over the top.

Video

Equipment

Notes

Each serving is approximately 6 ounces of the blended soup plus 1/6 of the extra chopped veggies.

Nutrition

Serving: 1peopleCalories: 128kcalCarbohydrates: 16gProtein: 2gFat: 7gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gSodium: 1006mgPotassium: 475mgFiber: 2gSugar: 11gCalcium: 67mgIron: 2mgNet Carbohydrates: 14g

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Author

  • Cheryl McColgan

    Cheryl McColgan is the Founder and Editor in Chief of Heal Nourish Grow, where she has published evidence-based health and nutrition content since 2018.

    With over 30 years of experience in fitness, nutrition, and healthy living, and nearly 20 years of professional editorial and journalism experience, she brings both subject-matter depth and trained editorial judgment to everything on the site.

    Cheryl holds a degree in Psychology with a minor in Addictions Studies, completed graduate training in Clinical Psychology, and is a NASM Certified Personal Trainer and E-RYT Certified Yoga Instructor and trained in Yoga Therapy.

    She is the author of 21 Day Fat Loss Kickstart, Make Keto Easy, Take Diet Breaks and Still Lose Weight, The Grain Free Cookbook for Beginners, and Easy Weeknight Keto.

    Read more about Cheryl and the journey that created Heal Nourish Grow on the about page.

    Cheryl McColgan is the founder of Heal Nourish Grow, where she writes about protein, body composition, healthy aging, and evidence-based nutrition and wellness along with the everyday habits that actually make those things work in real life.

    With a background in psychology and graduate training in clinical psychology, plus nearly 20 years of experience in editorial and publishing, Cheryl approaches health from both a research and real-world perspective. She’s also been immersed in fitness and nutrition for more than 25 years, which gives her a practical lens most purely academic content tends to miss.

    Her work today focuses heavily on protein intake (especially for women), muscle retention, metabolic health, and sustainable fat loss, along with topics like sleep, wellness, recovery, and wearable health tech. You’ll also find a mix of high-protein, low-carb recipes designed to make hitting those goals easier without overcomplicating things.

    Cheryl’s interest in health and nutrition became more personal after navigating her own health challenges, which pushed her to dig deeper into how lifestyle, diet and daily habits impact long-term health. That experience continues to shape how she approaches everything on this site: practical, realistic, and focused on what actually works over time.

    What Cheryl Covers

    Most of the content here falls into a few core areas:

    Protein & Muscle Health: how much you actually need, especially for women and how to use protein to support strength, body composition, and aging
    Fat Loss & Metabolic Health: sustainable approaches that prioritize muscle retention and long-term results
    Healthy Habits & Lifestyle: sleep, movement, strength training, consistency, and the small things that compound over time
    Wearables & Recovery: real-world testing and comparisons of tools like Oura, Whoop and others
    High-Protein & Low-Carb Recipes: simple, realistic meals that support your goals without feeling restrictive
    Travel & Lifestyle: wellness-focused travel, outdoor experiences, and a slightly more elevated take on healthy living

    If you're new, here are a few good places to begin:

    30 Day Healthy Habits Challenge

    Protein Foundations

    High Protein Recipes

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