Watermelon Banana Smoothie

Get ready to be refreshed with this delicious watermelon banana smoothie! This easy smoothie recipe takes minutes to make and is the perfect post-workout treat. Add protein powder for added nutrition and enjoy this naturally sweetened watermelon smoothie today!

Two pink smoothies sit on a table. They have watermelon wedges and paper straws. There are watermelon wedges in the background.

We love smoothies around here. Take, for example, our super healthy green smoothie. It’s packed to the brim with nutrition! There’s also our chocolate peanut butter protein smoothie. It’s a great way to add more plant-based protein to your diet.

What’s so special about this one? Well, you can make this cool watermelon banana smoothie recipe in under 5 minutes. With only 5 ingredients and no added sugar, this smoothie is easy to make. I love that it satisfies my sweet tooth, too!

What is a Smoothie?

What’s all this talk of smoothies? They’re basically blended, frozen drinks that can be made with fruits, greens, and other healthy ingredients.

This recipe is a fruit smoothie, but you can add some fresh spinach to give it a green kick!

Watermelon Smoothie Ingredients

  • Lemon — We’ll use both the zest and the juice of the lemon.
  • Oats — I used rolled oats for this recipe, but you can substitute instant oats.
  • Chia — We’ll add some ground chia seeds to create a thicker texture. You can use whole chia seeds; I just prefer ground because it creates a smoother finished texture.
  • Syrup — I used maple syrup, but you can substitute agave nectar.
  • Milk — We’ll use almond milk for the best overnight oats! Substitute your favorite plant-based milk.
  • Yogurt — I love adding some plant-based yogurt (plain, unsweetened) for an even more tangy flavor.
  • Protein Powder — I add some vanilla protein powder for increased flavor and nutrients. If your protein powder is not sweetened, you may want to add an extra teaspoon or two of sweetener.
  • Cornstarch — We’ll use cornstarch to thicken the lemon curd topping.
  • Turmeric — A pinch of turmeric makes that lemon curd sunny yellow.
  • Watermelon — Once you cut up a watermelon, a smoothie is a great way to use the rest of it!
  • Banana — A ripe banana is all you need for this smoothie recipe.
  • Raspberries — Here, frozen raspberries add color and create the slushy, smoothie texture we’re looking for.
  • Ice — Adding crushed ice is another way to create that thick smoothie texture. If you don’t have crushed ice, add regular ice to your blender and let them sit for several minutes to begin thawing. Then begin pulsing on low in short bursts to give your blender time to grind the ice.
  • Optional — I love adding vanilla protein powder to this smoothie.

How to Make Watermelon Banana Smoothies

  1. Pulse the melon and banana in a blender until smooth
  2. Add the frozen berries and crushed ice.
  3. Pulse again until smooth.
A closeup of a watermelon banana smoothie in a glass. It has a red and white straw and watermelon wedge.

Why This Recipe is a Winner

  • THRIFTY — This is a great way to use leftover watermelon!
  • EASY — Made with only 4 ingredients and 5 minutes, this smoothie is easy and delicious!
  • REFRESHING — Watermelon is so refreshing and revitalizing!

Is a Watermelon and Banana Smoothie Healthy?

Watermelon is a low-calorie source of vitamins A and C, magnesium, and potassium. Bananas are a great source of potassium, fiber, and vitamin B6. Combining these two in a smoothie makes a healthy addition to your day.

Flavor Variations

You can change up the flavor of your watermelon and banana smoothie with the following add-ins:

  • Add fresh or frozen berries, such as blueberries.
  • A small bit of matcha powder can add some zing. Check out this strawberry matcha smoothie as a guide.
  • I love combing a leaf of fresh mint with watermelon. This watermelon slushie is a great example.
  • Do you like mango? Adding some frozen mango can mix up the flavor nicely!
  • Add fresh spinach or kale to give this drink a green boost. Green smoothies are not only healthy but tasty, too!

Storage Tips

Smoothies are best served fresh. However, you can cover and store it in the fridge for up to 2 or 3 days. They can be frozen for up to 2 months.

Vegan Smoothies

If you love this watermelon banana smoothie recipe, here are more smoothie favorites to try:

The watermelon banana smoothie is so easy to make! Enjoy this refreshing beverage and get a nutrient-rich dose of fruit at the same time.

This smoothie has antioxidants, minerals, and vitamins, so it’s a great way to stay healthy while enjoying a delicious and satisfying treat. Enjoy!

Two pink smoothies sit on a table. They have watermelon wedges and paper straws. There are watermelon wedges in the background.

Watermelon Banana Smoothie

Get refreshed and energized with this delightful Watermelon Slushie recipe made from whole food ingredients!
5 from 1 vote
Course: Drinks
Cuisine: American
Prep Time: 3 minutes
Cook Time: 2 minutes
Total Time: 5 minutes
Servings: 1 smoothie
Calories: 199kcal


  • 1 cup chopped watermelon
  • 1 banana
  • ¼ cup frozen raspberries
  • 1 cup ice


  • Add the watermelon and banana to a blender. Pulse until smooth.
    Fresh fruit is in a blender with protein powder and other smoothie ingredients.
  • Add frozen raspberries and ice. Blend on low, gradually increasing he speed. Blend until smooth.
    Looking down on a blender jar with pink liquid, raspberries, and crushed ice.
  • Take a taste test. If you'd like it to be sweeter, add a bit of stevia or maple syrup.
  • Pour the smoothie into a glass and enjoy!
  • You can refreeze any leftover slushies. Remove from the freezer and allow it to sit at room temperature until it softens to a slushie consistency.

Recommended Equipment

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Optional additions

  • Add a scoop of protein powder to give the smoothie an extra boost of protein.
  • Throw in a handful of spinach for a nutrient boost and a slight green color.
  • A tablespoon of maple syrup can be added for a touch of sweetness.
Calories: 199kcal | Carbohydrates: 46g | Protein: 4g | Fat: 3g | Saturated Fat: 0.2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 178mg | Potassium: 683mg | Fiber: 8g | Sugar: 27g | Vitamin A: 960IU | Vitamin C: 38mg | Calcium: 189mg | Iron: 1mg

The nutrition information shown is an estimate provided by an online nutrition calculator and should not be considered a substitute for a professional nutritionist’s advice.

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