Slushie Recipes

πŸ‰ Watermelon Mojito Slushie

Millie Pham

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Serves: 2
Total Time: 5 minutes
Macros (Per Serving):
Calories: 65 | Carbs: 17g | Sugar: 14g | Fat: 0g | Protein: 1g | Fiber: 1g

A Quick Hello 🍃

If summer had a flavor, this would be it.

This Watermelon Mojito Slushie is ice-cold, super refreshing, and packed with juicy watermelon, fresh mint, and zippy lime juice.

No alcohol, no stress—just good vibes in a glass. It’s basically the spa day of drinks.

🧡 Why I Love This Recipe

I made this one afternoon after a hot day out in the garden, and wow—it hit the spot. It’s fresh, a little tangy, and so hydrating. I’ve kept frozen watermelon in my freezer ever since.

Here’s why I love it:

  • Only 4 ingredients!
  • It’s a drink and a snack
  • Way more exciting than water or plain juice
  • Feels fancy, but it’s so easy
  • You can sip it slowly and stay cool
Watermelon Mojito Slushie

🍉 What You’ll Need

  • 3 cups frozen watermelon (cubed)
  • Juice of 1 lime (about 2 tbsp)
  • 6 fresh mint leaves
  • 1 cup ice cubes
  • Optional: splash of sparkling water for topping

⚙️ Tools You’ll Need

  • Blender
  • Citrus juicer (or just use your hands)
  • Measuring cup
  • Tall serving glasses
  • Spoon for stirring

🧪 Why This Recipe Works (Quick Science)

Watermelon is 92% water, which makes it perfect for slushies. Freezing it first gives you that thick, icy texture without adding extra water. Lime juice brings acidity and brightness, while mint adds a cooling compound called menthol—so every sip feels extra refreshing.

❌ Common Mistakes

  • Using unfrozen watermelon – You’ll get juice, not a slush.
  • Over-blending – Can turn watery fast. Just pulse until it’s fluffy.
  • Too much mint – It’s strong. Stick to about 6 leaves or it’ll taste grassy.
  • Not seeding the watermelon – Seeds can mess up texture.

🥄 Step-by-Step Instructions

Step 1: Add 3 cups frozen watermelon cubes to blender

What to do: Toss in 3 cups of frozen watermelon cubes. They should be fully frozen and seedless (or deseeded).

Step 2: Add juice of 1 lime (about 2 tbsp)

What to do: Squeeze in the juice from 1 fresh lime, about 2 tablespoons.

Step 3: Add 6 fresh mint leaves

What to do: Tear up 6 fresh mint leaves and add them to the blender for a more even flavor.

Step 4: Add 1 cup of ice cubes

What to do: Pour in 1 cup of ice to give it that slushie texture.

Step 5: Blend until slushy

What to do: Blend everything for 20–30 seconds. It should be thick and icy, not runny.

Step 6: Pour into glasses & top with sparkling water (optional)

What to do: Pour into two glasses. Add a splash of sparkling water if you want a fizzy finish. Garnish with extra mint or a lime slice.

🧊 Make-Ahead Tips

Cut and freeze your watermelon cubes ahead of time! Just store them in a zip-top bag and pull them out when you’re ready.

🥡 Leftovers + Storage

Honestly, it’s best fresh. But if you’ve got extra, pour it into an ice cube tray and freeze. When ready, re-blend with a splash of lime juice or sparkling water.

🔁 Substitutions + Variations

  • Add sweetness: Add 1 tsp honey or agave if your watermelon isn’t sweet enough
  • Add cucumber: ½ cup frozen cucumber adds a spa-like twist
  • Turn it into a cocktail: Add a splash of white rum (adult version!)
  • Go tropical: Add frozen pineapple with the watermelon

🍽 What to Serve With

This slushie pairs perfectly with:

  • Grilled shrimp tacos
  • Caprese salad
  • Chips and guacamole
  • Fresh fruit skewers
  • Spicy BBQ anything

❓ FAQ

Can I use fresh watermelon?
Only if you freeze it first. Otherwise, it’ll just make juice.

Do I need a high-speed blender?
It helps. If using a regular blender, cut watermelon into smaller chunks.

Can I skip the mint?
Yes! But it won’t have that mojito-style vibe.

Can I make it ahead?
You can prep ingredients ahead, but blend right before serving for the best texture.

💬 Final Thoughts

This Watermelon Mojito Slushie is a little slice of summer in every sip. It’s simple, refreshing, and tastes way fancier than it actually is. Give it a try and drop a comment—tell me how you liked it or what fun twist you added!

Hi there! I'm Millie Pham, a devoted brewer and tea lover at heart. As the founder of Bean Leaf Cup, my mission is to share my tea and coffee expertise with you all. I firmly believe that creating a fantastic cup of tea or coffee should be easy for everyone. No matter if you're already a coffee or tea expert or just beginning your journey, I'm here to help you navigate the world of brewing. Welcome aboard!