Watermelon Slushie Recipe

3 glasses of watermelon slushie on marble serving tray

5 from 6 reviews

This refreshing Watermelon Slushie Recipe is made with only 4 healthy ingredients! It’s easy to make and perfect for a hot summer day. 


  • 10 cups Seedless Watermelon Cubes, frozen for at least 24 hours
  • 24 tbsp Maple Syrup*
  • Juice of 1 large Lime
  • 1/4 cup Fresh Mint or Basil leaves, loosely packed (Optional, but recommended)
  • 1 1/2 cup Filtered Water (see notes for a fun substitution!)


  1. First, let the Frozen Watermelon chunks sit at room temperature for 5-10 minutes to defrost some. Then, add the Watermelon, 2 tbsp Maple Syrup, Lime Juice, Mint, and Water to a high-speed blender.
  2. Pulse the blender until the Watermelon starts to break up some, then blend to form a thick, slushie consistency. Adjust the Maple Syrup to taste, adding more if necessary. If the mixture is too thick for your liking, you can also add in extra water.
  3. Divide equally into 4 glasses, serve, and enjoy!


  • If you do not have a blender with a tamper, I would suggest making this recipe in a Food Processor instead
  • I used about 1/2 of a Medium-to-Large sized Seedless Watermelon for this recipe
  • You will need to adjust the Maple Syrup in this recipe based on how sweet your Watermelon is; I recommend starting out with 2 tbsp, and increasing from there in 1 tbsp increments.
  • Maple Syrup can be substituted for any other sweetener of choice
  • For a fun fizzy alternative, substitute the Filtered Water with a flavored Sparkling Water of your choice!

Keywords: watermelon, watermelon slushie, watermelon drinks, summer drinks