Looking for a light and tasty treat? This low-carb watermelon smoothie with mint and lime only takes minutes to prep!

Low-Carb Watermelon Smoothie garnished with mint in a glass with a straw

This low-carb watermelon smoothie with mint and lime doesn’t have all the sugar, fillers, and artificial ingredients you get in smoothies from a shop or the grocery store.

It’s low-carb for a sweet smoothie, and watermelon can be diabetes-friendly when it’s only combined with fresh, natural, low-carb ingredients.

Why you will love this watermelon smoothie

  • It’s super refreshing and hydrating
  • The stevia adds sweetness without spiking your blood sugar
  • You only need 6 ingredients
  • There are no artificial ingredients or fillers
  • It’s ready in 5 minutes

Low-carb watermelon smoothie ingredients

This super easy smoothie uses simple, natural ingredients for a cool treat you’ll want to make again and again!

Smoothie ingredients in separate ramekins, as seen from above
  • Watermelon — This provides natural sweetness and hydration. You can chill the cubed watermelon in advance for an extra refreshing smoothie.
  • Soy milk — I like the texture of soy milk in this recipe, but you can use any type of milk you want to add creaminess.
  • Lime juice — Citrus adds a tangy brightness that complements the watermelon. I recommend freshly squeezed lime juice.
  • Mint — This gives the smoothie that pop of cool, refreshing flavor.
  • Stevia — You can use any low-carb sweetener and adjust to your desired level of sweetness.
  • Ice — This helps thicken the smoothie and makes it even more refreshing.

How to make low-carb watermelon smoothie with mint

Unblended ingredients in blender, as seen from above
  • Add the watermelon, lime juice, stevia, soy milk, and mint to a blender
  • Blend until completely smooth
  • Add the ice to the blender
  • Pulse until the ice is incorporated
  • Serve immediately.

Enjoy!

Smoothie in a glass jar garnished with fresh mint

Recipe tips and tricks

  • For the best texture, blend everything except the ice first. Once smooth, add the ice and pulse until the smoothie reaches your desired texture.
  • Adjust the stevia to your desired level of sweetness.
  • Garnish the smoothie with a mint leaf if desired.

Substitutions and variations

  • You can swap out the soy milk for almond, coconut, oat, or dairy milk if you prefer.
  • Feel free to use another low-carb sweetener like monk fruit if you don’t like Stevia.

What to serve with a watermelon smoothie

This refreshing drink is great all on its own if you’re looking for something to cool you down.

If you’re in the mood for a more substantial snack after a workout or doing chores outside on a hot day, I love pairing the smoothie with peanut butter protein balls. The flavor combination is so satisfying.

I’ve also been known to enjoy this smoothie alongside a keto no-bake cookie. These are great because you don’t have to heat up the oven to make them!

Storage and freezing

  • I recommend serving this smoothie right away. This will give you the best flavor and texture.
  • If you want to prep the smoothie ingredients in advance, just store them in the refrigerator until you’re ready to blend everything together.
Smoothie in a glass jar with a straw, garnished with fresh mint

Other healthy smoothie recipes

It’s easy to make your own delicious and healthy smoothies right at home!

For even more smoothie inspiration, check out this roundup of the best low-carb smoothies for diabetics!

Watermelon Smoothie

5 from 1 vote
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Looking for a light and tasty treat? This low-carb watermelon smoothie with mint and lime only takes minutes to prep and is so refreshing!
Prep Time: 5 minutes
Total Time: 5 minutes
Servings: 4

Ingredients 

  • 2 cups watermelon, (cubed and chilled)
  • 1 lime, (juiced)
  • 5 drops liquid stevia, (or to taste)
  • ½ cup soy milk
  • 5-10 fresh mint leaves, (to taste)
  • 3 cups ice

Instructions

  • Add the watermelon, lime juice, stevia, soy milk, and mint to a blender.
    2 cups watermelon, 1 lime, 5 drops liquid stevia, ½ cup soy milk, 5-10 fresh mint leaves
  • Blend until completely smooth.
  • Add the ice.
    3 cups ice
  • Pulse until the smoothie is incorporated, then serve immediately.

Notes

This recipe is for 4 servings of watermelon smoothie. Each serving is 1 cup.
This smoothie is best served immediately.

Nutrition Info Per Serving

Nutrition Facts
Watermelon Smoothie
Serving Size
 
1 cup
Amount per Serving
Calories
33
% Daily Value*
Fat
 
0.5
g
1
%
Saturated Fat
 
0.1
g
1
%
Trans Fat
 
0
g
Polyunsaturated Fat
 
0.3
g
Monounsaturated Fat
 
0.1
g
Cholesterol
 
0
mg
0
%
Sodium
 
12.7
mg
1
%
Potassium
 
116.1
mg
3
%
Carbohydrates
 
6.5
g
2
%
Fiber
 
0.4
g
2
%
Sugar
 
4.9
g
5
%
Protein
 
1.2
g
2
%
Net carbs
 
6.1
g
* Percent Daily Values are based on a 2000 calorie diet.