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Watermelon Mustard Recipe

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You've got to try the TikTok watermelon with mustard trend! While it's an unusual flavor combination, it's surprisingly good. The tangy mustard pairs perfectly with a juicy and sweet watermelon.

While you can obviously just put yellow mustard on your watermelon, I decided to make a more interesting mustard sauce. It's a blend of sweet and savory that really hits the spot.

Three pieces of watermelon with mustard sauce on a white plate.

Why You'll Love Watermelon with Mustard Sauce

If you like a salty-sweet combo, then this recipe is for you! While it might sound a bit odd, it makes sense that it would pair together well. It's a little like relish and mustard together.

This unusual combination was shared by @yayayayummy on TikTok and it's been viewed over 2 million times. Loads of people have tried the combination and love it. You can find loads of great takes if you search on TikTok for "watermelon mustard challenge".

A half a watermelon, a bowl of mustard, a bowl of honey, a bowl of tajin seasoning, and two lime halves on a marble background.

Ingredients You'll Need

To make this easy snack, you'll need one very ripe watermelon, two tablespoons of stoneground (or yellow) mustard, one tablespoon of honey, half a tablespoon of freshly squeezed lime juice, and one teaspoon of tajin seasoning.

You'll briskly whisk together the mustard, honey, lime juice, and tajin and then drizzle it over the slices of watermelon. Serve immediately and enjoy!

A closeup shot of a bowl of mustard sauce.

How to Choose a Ripe Watermelon

This recipe tastes best with a ripe and juicy watermelon. Here's how to find the best one.

  • A rounder watermelon will be sweeter.
  • Watermelon should be heavy for its size. If it's not heavy it won't be juicy.
  • Watermelon with a white field spot on it will be tasteless. Look for ones with a creamy or light orange spot. This means it's ripened in the field.
  • Watermelon with lots of webbing on it signifies sweetness. A small amount of webbing means it will be bland.
  • If it has a stem, it should be brown and dried. If the stem is green, it was picked too early.
  • Watermelon should be a duller and darker green. Shiny watermelon or light green watermelon are not ripe.
Two slices of watermelon with mustard sauce.

More Watermelon Recipes to Try

Love watermelon? We do too! Check out some of our other favorite recipes.

If you try this recipe, let us know! Connect with us on Instagram and share your photos or leave us a rating.

Yield: 10 slices

Watermelon with Mustard

Three pieces of watermelon with mustard sauce on a white plate.

This unusual flavor combination of watermelon and mustard sauce is sweet and salty!

Prep Time 5 minutes
Total Time 5 minutes


  • 1 ripe watermelon
  • 2 tablespoons stoneground mustard*
  • 1 tablespoon honey
  • ½ tablespoon lime juice
  • 1 teaspoon tajin seasoning


  1. Cut the watermelon into triangular slices.
  2. Combine the mustard, honey, lime juice, and tajin seasoning in a small bowl and briskly whisk to combine.
  3. Drizzle the mustard sauce over the watermelon slices and serve.


*You can also use yellow mustard.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 18Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 109mgCarbohydrates: 4gFiber: 0gSugar: 4gProtein: 0g

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