This keto watermelon smoothie is the perfect refreshing start to your morning. Watermelon is an excellent fruit to include in your diet, even on keto, thanks to its high water content—over 90%—which helps keep you hydrated and feeling light. With very low net carbs, this smoothie supports your keto goals while giving you a naturally sweet, healthy boost. Fresh mint adds a cool, invigorating flavor that makes it even more refreshing. Unlike artificial smoothies filled with fake flavors and additives, this homemade version is clean, wholesome, and truly diet-friendly.
Ingredients
Equipment
Method
- It just takes only five minutes to follow all these instructions, so enjoy!
- To make this smoothie recipe you just have to blend all the given ingredients, which we mentioned above.
- Plug your blender or food processor, and set it to high or full speed.
- Now first you have to add the cubes of watermelon, stevia, lemon juice, and half and half or heavy cream and blend them at full speed in a blender.
- When the mixture becomes smooth and fluffy, or there are no crumbs in it then add the other remaining ingredients (vanilla extract, milk) in it.
- After adding the remaining ingredients blend them into the slow speed of the blender, which helps us to achieve the best results for this keto recipe.
- Make sure you blend all the ingredients then add the chilled ice cubes in the blender and again blend the smoothie in the full-speed blender to crush all the ice cubes.
- Plug off the blender and transfer the smoothie into the serving glass.
- For the serving take the watermelon cube or also the fresh leaves of the mint.
- Set them on the top of the smoothie glass and serve it.
Notes
Nutritional facts:
The amount per serving is one glass:- Fat 3 grams
- Sugar 0.2 grams
- Carbohydrate 1 gram
- Protein 0 gram
- Calories: 37 kcal
- Fiber 0.1 grams
- Net carbs: 3 grams
Keto Watermelon Smoothie

Tips
- Use fresh, juicy watermelon for the best flavor and texture.
- Watermelon is naturally low in carbs, making it a great keto-friendly fruit.
- Add fresh mint and a splash of lemon juice to enhance the refreshing flavor.
Ingredient Variations
Xanthan Gum
You can add a small pinch of xanthan gum to make the smoothie creamier and thicker. This is optional.
Watermelon-Flavored Oil
If you have watermelon-flavored oil, add just 1 teaspoon. It’s optional and the smoothie tastes great even without it.
Sweetener
You may replace liquid stevia with a sugar-free sweetener like monk fruit. Adjust to taste.
Why You’ll Love This Smoothie
- Watermelon provides hydration and natural nutrients that support overall health.
- The flavor is incredibly refreshing—perfect for hot summer days.
- Contains no artificial flavors and helps support healthy blood sugar levels.
Ingredient Notes
Watermelon
Cut the watermelon into cubes and remove all seeds for a smooth texture.
Milk
Use any milk you prefer—almond, coconut, soy, or dairy all work well.
Half-and-Half
This adds creaminess. It’s simply equal parts light cream and milk.
Stevia Extract
Liquid stevia is ideal because it blends smoothly and replaces sugar without affecting texture.
Instructions
This recipe takes just 5 minutes to prepare:
- Add watermelon cubes, stevia, lemon juice, and half-and-half to the blender.
- Blend on high speed until smooth and fluffy with no chunks remaining.
- Add the remaining ingredients (vanilla essence and milk).
- Blend again on low speed to combine gently and achieve a creamy consistency.
- Add the ice cubes and blend on high speed to crush the ice completely.
- Turn off the blender and pour the smoothie into a serving glass.
- Garnish with a watermelon cube and fresh mint leaves. Serve chilled.
Storage Information
In the Fridge
Keep the smoothie chilled in the refrigerator if you plan to serve it soon. It stays fresh for a few hours.
In the Freezer
Store in a sealed container for 2–3 days. Thaw slightly and re-blend before serving for best texture.
At Room Temperature
This smoothie can stay cool for 1–2 hours because of the ice, but it’s best enjoyed immediately.
Frequently Asked Questions
Can I add keto-friendly nuts to this smoothie?
Yes! You can add walnuts, almonds, or shredded coconut for extra flavor and texture.
Is watermelon good for diabetics?
Yes, watermelon can be suitable for diabetics when eaten in moderation. It’s hydrating, low in calories, and contains natural sugars with a low glycemic load.