Strawberry Watermelon Smoothie

This strawberry watermelon smoothie is full of juicy flavor! This 3 ingredient recipe is a deliciously healthy treat.

Here’s a smoothie recipe that’s so simple and so utterly delicious, it’s jumped to the top of our favorites. Try this Strawberry Watermelon Smoothie! It’s sweet and delicious, with just the right juicy flavor with no added sweetener. It’s a great snack or even works as a healthy dessert after a summer meal: it’s just that good! Our 4 year old could not stop sipping it, and neither could we.

3 ingredients for a strawberry watermelon smoothie

This strawberry watermelon smoothie has the least ingredients of any of our smoothie recipes. But it’s one of the top in terms of flavor! There’s something about the melon and berry combination that’s pure summer. This one has a bit of nostalgia for me: I created it based on my favorite smoothie at the mall growing up in the 1990’s (ha!). It’s actually much better than the inspiration. Here’s what you’ll need:

Frozen strawberries: These bring in sweetness and an icy texture
Watermelon: Make sure it’s perfectly ripe, in season melon
Banana: A room temperature banana combines to make the perfect creamy texture and accentuates the sweetness

Simply throw them in the blender and puree it up. It makes the perfect sweet tart, fruity flavor!

Find a ripe watermelon!

The most important advice for this smoothie? Make sure your watermelon is ripe! It’s not worth making this smoothie with out of season watermelon, which can be tart and tasteless. Here are a few tips for shopping:

Shop in watermelon season. If it’s out of season, it’s much more likely to be unripe.
Look for a yellow field spot. Most watermelons should have a patch on the bottom, which is where they were resting on the ground before being picked. If the patch is yellow, the watermelon is ripe (if it’s white, it’s unripe).

Ways to add protein to a strawberry watermelon smoothie

One thing to note about this strawberry watermelon smoothie: it’s just fruit, so it doesn’t have protein. That means it’s best served as a treat or a way to drink your vitamins, not as a meal replacement. But if you’d like to add protein, you can feel free! Protein makes it filling and more suitable for drinking as a snack or breakfast. Here are a few protein adders:

Chia seeds. Add plant-based protein and fiber with chia seeds! 2 tablespoons chia seeds adds 4 grams protein and 11 grams fiber (see this Chia Seed Smoothie).
Protein powder: Use a high quality vanilla protein powder (some notes on buying a good brand are in this energy balls post).
Almond butter or cashew butter. 1 tablespoon nut butter adds 4 grams protein. This does compete with the flavor a bit, and dulls the color of this smoothie. But it works!