Watermelon Frosty

Simple and just out-of-this-world refreshing, a watermelon frosty is a sure way to find solace in the sweltering heat of the summer. This light and chilly treat is so easy to make and healthy, to boot, that I don’t feel guilty serving it to my children at all hours of the day as they are toodling around outside in the warm summer morning and afternoons.

I’ve started keeping chunks of watermelon and bananas in the freezer for just this purpose and I instantly become Mom-Of-The-Year when I shout to the charges that watermelon frosties are ready and waiting!

As a little bonus, see below the recipe for the easiest way to cut a watermelon. I saw it done years ago like this by a friend of my mom’s and basically, it’s brilliant. And the only way I prefer to cut my watermelon these days. Peace out.

Watermelon Frosty

Yield: Serves 4-ish

Watermelon Frosty


  • 2 cups frozen watermelon cubes
  • 1/2 frozen banana
  • 1/2 cup water (plus more, if needed)
  • Juice of 1/2 lemon or 1 lime
  • 1-2 tablespoons maple syrup or other sweetener (like honey)


  1. Put all the ingredients in a blender or food processor and process until the mixture is smooth and frosty. You may need to add a bit more water at a time to loosen up the mixture. I found it liked to get stuck in my not-so-powerful blender. Try not to over water it or it will lose some flavor.
  2. Serve immediately (in frosted glasses, if desired!).

Recipe Source: from Mel’s Kitchen Cafe (seen all over the internet and created at home)

39 Responses to Watermelon Frosty {And How To Cut A Watermelon}

  1. molly says:

    I put it in the freezer and took it out & the Juice was all separated .Hmmm..Any way to stop that?? Thanks!

    • Mel says:

      It’s been a while since I’ve made this and I don’t remember that happening – perhaps try giving it a stir about an hour into freezing?

  2. Rachel Russell says:

    Have made no less than 3 times already this summer- kids LOVE. Love it even better with lime than the lemon + and maple syrup is a fab addition- makes a totally unique flavor instead of just like watermelon + banana. Kids FAV request of summer.

  3. Rachel Russell says:

    Loved loved loved!!!!!!!!!!!

  4. […] melskitchencafe.com via Paula on […]

  5. Cassandra says:

    Will you add the cutting instructions to the tutorials page so I can find it easy next time I’ve got a watermelon?

  6. Liza says:

    I’ve made these twice this week. My husband and 3-year-old and I all love them but our reaction is nothing compared to the baby’s: http://vimeo.com/27647498

  7. cindy says:

    Perfect, easy, healthy, treat!

  8. Katherine says:

    The Kid and I tried this today, and it was sooo easy and good! It’s hard to eat all the fruit I buy. Now I can pop watermelon and bananas into the freezer, then into the blender. It’s a great snack for steamy southern afternoons! Another great recipe from your website! Thanks!

  9. grace says:

    …and i’m slain. slain, i tell you. this is a brilliant and refreshing and oh-so-simple treat!

  10. AnnetteBrunette says:

    Mel, my blender hates this recipe, but I LOVE it! I might try something similar with cantaloupe soon too.

  11. Julia says:

    Thank you so much for this recipe. We are growing watermelons this year and the first one we cut was 26 pounds. I now have two more sitting on the counter and was wondering how in the world we were going to eat all of them up before they went bad. For some reason, I never thought to freeze watermelon. I made this the same day you posted it and my only complaint is that it definitely does not serve four (at least not a my house!LOL) My two oldest boys (8 & 5) devoured it and complained that there wasn’t enough. I love your website, especially that you don’t accept advertisers freebies.

  12. So excited to try this! I cut my watermelon much differently but I might have to try this way sometime. I’m pretty sure my way is a good one but I need to make sure…. 😉

    Love your recipes!

  13. Bri says:

    I loved the maple flavor, and didn’t really notice it. This was so yummy. I only used 1 tablespoon and it was definitely sweet enough. I will make this again and again!

  14. Lindsay says:

    May I make a small recommendation? I tried this tonight and was so excited about it but was slightly disappointed (probably my own fault). I would recommend tasting your smoothie before adding a sweetener. I think my watermelon and bananas were ripe enough to produce enough sweetness. I really disliked the maple flavor. I thought it overpowered the fruit with a funny aftertaste. Maybe try the honey or rem white sugar instead! I’ll try it again, just slightly different.)

  15. Rebecca says:

    That looks so yummy, and thanks for the watermelon tip! I’ll have to try it. Next time you have pineapple juice on hand, try using that instead of water in your smoothie. I use to work at Jamba Juice and they use to have a watermelon smoothie with frozen watermelon, raspberry sherbet and pineapple juice. Makes an awesome slushy. Not as healthy as yours, but reminded me of it. Thanks!

  16. VERY yummy looking frosty and VERY cool technique with the watermelon!!
    thanks, Chris

  17. Dalila G. says:

    Oooops….sorry, not video. I meant step-by-step instructions…..sheesh, I’m such a dork!

  18. Dalila G. says:

    The watermelon frosty is a fabulous idea! It will definitely be one item this household will be drinking! 🙂 Frozen banana’s are always in my freezer for many different recipes. Thanks for the helpful video.
    Have a wonderful day!

  19. Kelly says:

    Your watermelon tutorial was great! Thanks for sharing!

  20. What a great recipe! I love that it has multiple fruits! Thanks for this-as soon as the watermelons ripen, I’m sure this will be a classic in our house 🙂

  21. Bri says:

    Holy crap. This is truly the best way to cut a watermelon! My husband was skeptical. When I showed him the tutorial he said “I think my way might be better”. I had him pick up a watermelon and we tried it out. It is now “the way”! I have a ziplock of watermelon in the freezer ready to be used for our freezes tomorrow after we get back from a 60 mile bike ride. I’m excited to try it, and I’m sure it will taste even better after we’ve been sweating our guts out.

  22. Nora says:

    Do you use a seedless watermelon or how do you get rid of the seeds before you blend the smoothie? Just curious. This looks so good. It has been so hot lately!

  23. Auntie Patch says:

    Brilliant! Thanks!

  24. Tiffani says:

    I love this!! It sounds so perfectly refreshing, and so very much summer. And cutting the watermelon?….Forehead-slappingly GENIUS! Thanks so much for such a great post!

  25. I LOVE the way you cut watermelon! Thank you for those pics and instructions, see I learn something new everyday 🙂

  26. Lindsay says:

    First of all, I love your site and I check it every single day!! I can’t wait to try this, but I have a quick question. I’ve never frozen bananas…so do you freeze them in the peel or not? That may be a dumb question, but I wasn’t sure. 🙂

    • Mel says:

      Lindsay – I peel the bananas and throw them in a freezer ziploc bag. No dumb questions here – for all I know…there may be people who freeze them in the peel but I peel them beforehand!

  27. Kira says:

    You are a genius! Really. I continue to search for another food blog/website as perfect as yours. I have yet to find it – it had been almost two years now! Your food is fresh, delicious, and so family friendly. We make most of what you post. And the pictures are beautiful. Thanks. Really, thank you for the time you spend. All the other websites I think I may like I add to my favorites list and then delete it soon after. You just never fail us. You are awesome.

  28. Teresa says:

    Hi Mel, I made this and we love it. I had some leftover cantaloupe that I mixed in as well (we Loooove cantaloupe) and instead of water I used leftover lemon ice i had in the freezer (your recipe) and didnt use the lemon juice. Great recipe, and so refreshing since we are having record breaking heat here in the bluegrass state.

  29. Erin Russell says:

    Thank you! I have 2/3 of a watermelon sitting in my fridge not being eaten. I don’t know why, exactly, but there it is. I will definitely try your cutting technique and will put in the the freezer TODAY! Thanks once again, Mel, for saving the day.

  30. The watermelons in my neck of the woods have been wonderful this year! We have been eating them up like crazy! Can’t wait to try this cold refreshing frosty! And thanks for the step-by-step tutorial!

  31. Kristine says:

    My daughter loves smoothies and I bet she would love this! I’ll have to try this recipe soon! (And thanks for the tip on how to cube a watermelon!)

  32. Kim in MD says:

    Wow…that looks so refreshing, Melanie! I can see why your kids think you are Mom Of The Year- I do, too! 🙂 I love the watermelon cutting tutorial. I have said it before, but it bears repeating that your tutorials are the best! 🙂

  33. Crystal says:

    What a timesaving way to cut up watermelon! So much easier than cutting the rind off each slice. I have a watermelon waiting patiently on my counter – can you say today’s snack?!?

  34. oh wow this looks so good. We have smoothies constantly in the summer, but I haven’t tried one with watermelon before! Can’t wait! 🙂

  35. Sarah says:

    I cut watermelon like that too! So quick and easy! These frostys look good 🙂

  36. What a great treat to serve to the kids when they get off the bus! They are always so hot. Great instructions on cutting the watermelon – the ones we get at our farm stand are so huge right now its a great thing to be able to cut it up and put some of the cubes in the freezer for later.

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