This delicious, fruity, and healthy watermelon banana smoothie is super simple to make and uses only 4 ingredients. It's a great option for breakfast when time is at a premium. It whips together in 5 minutes or less. Add homemade walnut butter for an extra protein boost!

Watermelon banana smoothie in a tall glass with a bronze straw and watermelon slice and bananas in the background

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Watermelon is one of my favorite summer fruits, and this watermelon banana smoothie is an easy way to enjoy it for breakfast. The banana adds natural sweetness and creates a smooth, creamy texture, while the watermelon keeps it light and refreshing. It’s a simple smoothie that comes together in minutes and is perfect for hot summer mornings.

If you enjoy fruit-based breakfasts, be sure to check out my tropical smoothie bowl as well. It’s another refreshing option that’s packed with fruit flavor.

Lately, we’ve also been experimenting with homemade juices. Making them at home allows you to control the ingredients and skip the preservatives and added sugars found in many store-bought juices. One of our favorites is this peach juice recipe. If you make it, don’t throw away the pulp. I also share a peach crumble recipe that puts it to good use.

What You’ll Love About This Recipe

It’s refreshing without being too heavy. The watermelon keeps it light, while the banana and Greek yogurt give it a smooth, creamy texture. The Greek yogurt also helps make it more filling than a fruit-only smoothie.
It’s a great way to use leftover watermelon. If you’ve ever bought a whole watermelon and wondered what to do with the rest of it, this smoothie is an easy solution.
It works for breakfast or a snack. It’s quick to make and comes together with just a few simple ingredients.
The flavors work well together. Watermelon and banana pair surprisingly well together, creating a naturally sweet smoothie that’s perfect for warm weather.

Ingredients

1 medium banana. Sliced. You should end up with approximately ¾ cup of sliced banana.
2 teaspoons brown sugar. Light or dark. Optional. For a sugar-free option, try Swerve brown sugar substitute. It has zero net carbs and no calories. I did not include the brown sugar in the ingredient photo because this is part of an optional step. I have included this step in the recipe because it will bring out the flavor of the banana. However, you can omit this step altogether, and the smoothie will taste just as good. 🙂
½ cup vanilla Greek yogurt. You can substitute frozen yogurt or a small sliced banana for a dairy free vegan version. If you don’t mind a thinner smoothie, you can also substitute a nut milk like almond or this simple and easy homemade walnut milk. It is also dairy-free and vegan.
1 cup chopped seedless watermelon. Chopped into 1 inch cubes.
Optional: Add 1 tablespoon of nut butter, like this delicious homemade walnut butter for a natural protein boost!

Instructions

The first two photos show an optional step. You do not have to do this, but it does help to bring out the banana flavor. Feel free to skip to Step 2 if you don’t want the added sugar or don’t want to bother with this step. This smoothie will taste just as delicious!

Overhead view of sliced bananas and brown sugar in a glass bowl — **Optional Step 1:** Add sliced banana to a small bowl. Sprinkle brown sugar over the top and microwave on high for about 20-30 seconds.

Overhead view of heated sliced banana and brown sugar in a glass bowl — Stir the brown sugar and banana and set aside to cool.

Overhead view of sliced banana and chopped watermelon in a blender — **Step 2:** In a large blender, add all ingredients in this order: yogurt, watermelon, and banana.

Overhead view of blended smoothie in a blender — **Step 3:** Blend until smooth.

Watermelon banana smoothie being poured into a tall chilled glass — **Step 4:** Pour into a chilled glass and enjoy.

Watermelon banana smoothie in a tall glass with a bronze straw and a second smoothie, watermelon slice and bananas in the background

Variations

Watermelon Banana Smoothie Bowl. Add ½ cup of uncooked rolled oats or chia seeds to the blender. This will absorb some of the liquid and make the smoothie thicker. It will also provide some additional nutrition!
Watermelon Strawberry Banana Smoothie. Add ½ cup of frozen strawberries to blender along with the watermelon and banana.
Watermelon Cucumber Banana Smoothie. Add 1/4 to ½ of a sliced cucumber to blender along with the watermelon and banana. Adjust cucumber to taste.
Watermelon Banana Apple Smoothie. Peel and chop 1 medium apple. If you want a tart flavor, I recommend the Granny Smith or McIntosh variety. If your taste buds lean toward the sweet, I would use Fuji or Gala. Add either 1/2 or whole apple, depending on how much apple flavor you want in your smoothie.

Related Recipes

More delicious smoothie, smoothie bowl, and shake recipes to make and enjoy!

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Prep Time:10

Freezing Time:1

Total Time:12

Equipment

Small bowl

Blender

Ingredients

1 medium banana Sliced. You should end up with approximately ¾ cup of sliced banana.
2 teaspoons brown sugar Light or dark. Optional.
½ cup vanilla Greek yogurt You can substitute frozen yogurt or a small sliced banana for a dairy free vegan version.
1 cup chopped seedless watermelon Chopped into 1 inch cubes.

US Customary – Metric

Instructions

Optional Step: Add sliced banana to a small bowl. Sprinkle brown sugar over the top and microwave on high for about 20-30 seconds.
Stir the brown sugar and banana and set aside to cool.
In a large blender, add all ingredients in this order: yogurt, watermelon, and banana.
Blend until smooth.
Pour into a chilled glass and enjoy.