ByRebekah Winscott Drinks, Spring, Summer

Watermelon slushie

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Ever made a watermelon slushie that turned out watery, bland, or just plain disappointing? It happens so easily when you use too much ice or not-so-sweet melon. But don’t worry, I’ve got a simple trick that fixes all of that.

Close-up of a watermelon slushie with a pink straw, fresh mint garnish, and colorful sprinkle rim in a glass

I’ve been making this watermelon slushie for years during those hot summer afternoons when nobody wants to turn on the oven. My family loves how refreshing it is, and I love that it’s quick, naturally sweet, and comes out perfectly thick every single time.

If you love this watermelon slushie, try my 4th of July mocktail, dirty ocean water, or a classic lemonade for more refreshing sips.

Why You’ll Love This Summer Drink Recipe

  • Simple ingredients you probably already have in your kitchen, so you can make this anytime the craving hits
  • Smooth and icy texture that feels like a real slushie without any complicated steps or special tools
  • Naturally sweet flavor with a touch of honey that brings out the best in the watermelon
  • Perfect for kids and summer gatherings when you need something fun, cool, and crowd-pleasing
  • Ready in just 5 minutes, which makes it perfect for busy days or last-minute treats

Ingredients

Top view of cubed watermelon in a bowl with ice cubes, honey in a small dish, and fresh mint on a marble surface, showing ingredients for a watermelon slushie
  • Watermelon, cubed and seeded – Use ripe, sweet watermelon for the best flavor. Seedless makes things easier.
  • Ice cubes – Gives that classic slushie texture. Don’t overdo it or it can dilute the flavor.
  • Honey – Adds a smooth sweetness that blends beautifully with the watermelon.
  • Mint leaves (for garnish) – Optional, but it adds a fresh, cooling touch and looks pretty too.

How to Make a Watermelon Slushie

Top view of a blender filled with cubed watermelon, showing the first step of blending watermelon for a homemade slushie
1. Step 1: Blend the watermelon. Place the watermelon cubes in a blender and blend until smooth.
Close-up of honey being poured into a blender with cubed fruit, showing the step of adding sweetener to summer drink
Top view of ice cubes added to cubed fruit in a blender, showing the step of creating a thick summer drink.

2. Step 2: Add ice and honey. Add the ice cubes and honey to the blender and blend until everything is well combined.

Close-up of summer drink being poured into a glass with a colorful sprinkle rim and mint garnish, showing the final serving step
3. Step 3: Taste and adjust. Taste the mixture and adjust the sweetness as needed by adding more honey. Pour the watermelon slushie into glasses and garnish with mint leaves.

Tips for the Perfect Watermelon Slushie

  • Always use a ripe watermelon for the best flavor
  • Blend the watermelon first so everything mixes smoothly
  • Don’t skip tasting before serving
  • Chill your glasses if you want that extra frosty feel
  • If it’s too thin, add a little more ice and blend again
Glass of watermelon slushie with sprinkle rim and mint next to a blender filled with slushie, showing the finished drink and blending process

How to Store + Make Ahead

  • Best enjoyed right after blending when the texture is perfectly icy and smooth
  • Freeze leftovers and re-blend before serving to bring back that slushie texture
  • Prep ahead by cubing and chilling your watermelon, so it’s ready to blend anytime
  • If it separates, just stir or blend again and it will come right back together

Watermelon Slushie FAQs

This usually happens when there’s too much ice or the watermelon isn’t sweet enough, so try using less ice or blending a little longer to get that thicker, more flavorful texture.

Yes, frozen watermelon works beautifully and will give you a thicker, colder slushie with stronger flavor, so you can even reduce the amount of ice if you go that route.

It’s best served fresh, but you can freeze leftovers and then re-blend them later to bring back that slushy texture before serving.

Yes, you can skip the honey if your watermelon is sweet enough, or you can swap it with granulated sugar, maple syrup, agave nectar, or simple syrup depending on what you have on hand and the flavor you prefer.

Close-up of a watermelon slushie with a smooth icy texture, topped with fresh mint and a colorful sprinkle rim
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Glass of watermelon slushie with a colorful sprinkle rim and fresh mint garnish, showing the finished drink ready to serve

Watermelon slushie

Recipe by Rebekah Winscott

This easy watermelon slushie is sweet, refreshing, and ready in just 5 minutes using simple ingredients like fresh watermelon, ice, and honey.

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Ingredients

Units Scale
  • 4 cups watermelon, cubed and seeded
  • 1 cup ice cubes
  • 2 tablespoons honey
  • Mint leaves for garnish

Instructions

  1. Place the watermelon cubes in a blender and blend until smooth.
  2. Add the ice cubes and honey to the blender and blend until everything is well combined.
  3. Taste the mixture and adjust the sweetness as needed by adding more honey.
  4. Pour the watermelon slushie into glasses and garnish with mint leaves.
  5. Serve immediately and enjoy the refreshing drink!

Notes

  • Use a ripe, sweet watermelon for the best flavor
  • You can skip the honey or substitute with sugar, maple syrup, or agave
  • If it becomes watery, blend in a little more ice

Nutrition

  • Serving Size: 8 ounces
  • Calories: 120 kcal
  • Sugar: 25g
  • Fat: 0g
  • Carbohydrates: 30g
  • Protein: 1g

Did you like this recipe?

Pin this recipe on Pinterest so you can find it later and follow me on Instagram @thisnanacancook for more recipe ideas.

If you tried this watermelon slushie, I’d love to hear what you think. It helps so much when you leave a quick star rating and a comment, and it lets other readers know this recipe is worth making too!

Posted In: Drinks, Spring, Summer

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Rebekah Winscott

Food Blogger

Rebekah Winscott is a Lancaster, Pennsylvania–based food blogger and the creator of This Nana Can Cook, where she shares approachable, flavorful recipes for everyday cooks. Inspired by her grandmother’s timeless dishes, she blends quick, delicious meals with heartwarming storytelling and practical kitchen tips.

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