Healthy Watermelon Smoothie
| Prep time: | Mixing time: | Total time: |
| 3 minutes | 30 seconds | 3 minutes and 30 seconds |
Enjoy a sweet drink packed with vitamins by following this healthy watermelon smoothie recipe. This little treat takes less than 5 minutes to prepare, ideal if you don’t want to spend hours in the kitchen but still want to treat yourself.
This smoothie is suitable for all seasons: watermelon is available year-round in supermarkets, whether in fall, winter, spring, and especially summer, the time of year when it is most abundant. So you can make this recipe whenever you want.
This watermelon juice is relatively low in calories, contains no cow’s milk (you can add some if you want), is quite sweet (thanks to the dates), and can be considered a slimming smoothie (provided you remove the extra sweetener so it’s not too sugary) or a post-workout smoothie. In this case, you can accompany it with a bowl of skyr with some granola, for example.
In short, this drink is delicious, easy to make, and ultra-fast. This smoothie can be a good idea if you’re tired of eating plain watermelon and want to try something new.
| Number of servings: | Total recipe cost (ingredients): |
| 1 glass | 1 € / 1,2$ -> 1,4 € / 1,7$ (bio) |
This recipe makes 1 serving. If you want to make it for 2, simply double the ingredients — and so on.
Tools & equipment:
- A smoothie blender (or a regular blender + a large container)
- A cutting board
- A knife
- A glass
- A teaspoon — for the honey
- A kitchen scale
- Some kitchen towels — to wipe up any spills
Ingredients :
- 200 g watermelon (seedless, if possible)
- 3 pitted dates
- 20 g rolled oats
- 50 ml very cold water
This recipe serves one person. If you want to make it for two, double the quantities, and so on.
Note about fruit: Always taste a few pieces before adding them to the recipe, as some may be spoiled and have an unpleasant taste. It would be a shame to ruin the recipe because of this.
Second note: I used a seedless variety of watermelon. If you can’t find any or don’t have any, you’ll need to remove the seeds. This will take a little time, maybe an extra 5 minutes (for a whole watermelon).

Optional ingredients:
- Add a whole banana for extra sweetness, thickness, and calories. In this case, there’s no need to use sweeteners (dates or honey).
- A little lime (or lemon) juice to enhance the flavor.
- A handful of berries (strawberries, blueberries, raspberries, etc.) for an extra fruity note.
- A few mint leaves for extra freshness
- Ice cubes, great in summer
- You can add a spoonful of chia seeds/flax seeds for extra fiber
How to make a Healthy Watermelon Smoothie ?
1) Preparing the ingredients:
Cut the watermelon and weigh it at the same time. Wash the dates, remove their pits (if they have them), and cut them up.

2) Oatmeal absorption:
Place the blender on the scale. Weigh and add the liquid and oats. You can wait for 5-15 minutes for the oats to absorb the liquid. This is optional, but it will give you a thicker smoothie.

3) Blending the smoothie:
Add the fruit to the blender and blend for at least 30 seconds. It is highly likely that you will have some pieces of dates and oats left at the bottom of the blender. You can use a strainer/filter to remove the leftovers.

4) Enjoying the recipe:
Pour the smoothie into a pretty glass and taste it. The dominant flavor is watermelon, while the oats and dates are almost completely undetectable. It’s a simple, sweet, refreshing recipe that’s great for staying in shape during the summer while still enjoying yourself.
Nutritional Information:
Below is an estimated breakdown of the macronutrients and calories in this recipe. These values are approximate and can vary depending on factors such as the brands you use, the nutritional content of the oatmeal, watermelon, dattes, and the liquid, as well as the freshness and quality of the ingredients.
| Fat | Carbohydrates | (of which sugars) | Fiber | Protein | Calories |
| environ 1,6g | environ 49,5g | environ 31,2g | environ 5,2g | environ 4,5g | environ 190 |
Tips and Tricks for the Recipe:
- Choosing the watermelon: choose a ripe one + put it in the fridge (or the pieces) so that the smoothie is nice and cold and naturally sweet.
- If the smoothie is too runny: add oat flakes. If, on the other hand, it is too thick, add pieces of watermelon or water/liquid.
Recipe Variations:
Want to tweak the recipe by adding or removing ingredients? Here are some creative ideas:
- Watermelon mint smoothie: Ultra classic and simple. Add a few mint leaves for a more intense freshness.
- Watermelon coconut smoothie: An exotic variation. Replace the water with a little coconut water (or coconut milk) for a more exotic and slightly sweet result.
- Watermelon banana smoothie: Easy to make and creamy. Add a small banana for a creamier and more satisfying texture.
How to store this smoothie:
24 hours in the refrigerator, in a sealed container.
You can put it in small ice cube trays. Maximum freezer storage time: 2-3 weeks to 1 month.
Pairings:
Here are some meal ideas to complement your Healthy Watermelon Smoothie, whether for breakfast, lunch, or an afternoon snack.
1) For Breakfast:
- Banana pancakes
- Swedish salmon toast
- Baked eggs
- Orange blossom brioche
- French toast
2) Meal Ideas:
- Quick croque monsieur
- Chicken Pasta Salad with Spinach and Cabbage
- Microwave egg and vegetable muffins
3) For a Snack or Afternoon Treat:
- Raisin scones
- Red fruit verrines with whipped cheese
- Apple pancakes
- Apple and pear crumble
