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5 from 1 vote

Almost Instant Ruby Red Granita

This granita-like treat is made quickly in a blender using a whole grapefruit and frozen watermelon. A refreshing, hydrating treat for when temperatures are soaring!
Prep Time5 mins
Total Time5 mins
Course: Dessert
Cuisine: American
Servings: 2 people
Calories: 88kcal


  • 1 grapefruit peeled
  • 1 cup frozen watermelon heaping cup
  • 1/4 cup orange juice sub coconut water or water*


  • Add the peeled grapefruit (I cut the peel off quickly with a knife), frozen watermelon, ice, and orange juice to a high speed blender.
  • Blend on mid-high for 1-2 minutes, using the tamper stick to keep the mixture blending. Blend for 30 seconds up to a minute after you think it's finished to make sure the grapefruit pith has been completely broken down and the mixture is smooth.
  • Serve as two small granitas, or as 1 large slurpee-like smoothie!


*If your grapefruit is very sweet, plain water or coconut water would work fine in this recipe. The grapefruit I buy in Malaysia is always very sour, so I find adding a bit of orange juice sweetens this treat up perfectly.
**If you prefer a sweeter treat, add honey or sugar, a teaspoon at a time, until it's right for you.


Calories: 88kcal | Carbohydrates: 22g | Protein: 2g | Fat: 1g | Saturated Fat: 1g | Sodium: 1mg | Potassium: 313mg | Fiber: 2g | Sugar: 16g | Vitamin A: 1909IU | Vitamin C: 60mg | Calcium: 32mg | Iron: 1mg