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Watermelon Radish Appetizer Bites

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These watermelon radish bites with spicy tuna are a great little appetizer. They're perfect for a canapés party or whenever you need a small, hand-held appetizer.

Watermelon radishes are ridiculously pretty - their hot pink center makes them really pop!

The best thing about this recipe is that it's incredibly easy and quick to make.

A plate of watermelon radish appetizer bites.

Why You'll Love These Easy Appetizer Bites

Besides the fact that these are ridiculously simple to make, they're also super easy to eat. The watermelon radish slice is sturdy enough that is holds the tuna and toppings. They make a perfect little pass around canapé or appetizer before a dinner party.

I also sometimes just make a bunch of them and have them for lunch! If you like the pepper kick of a radish and a creamy (lightly spicy) tuna salad, then you've got to try these.

Ingredients for watermelon radish and tuna appetizer bites.

Ingredients for Radish Tuna Bites

This recipe is super simple and you don't need much to make it! Here's what to get.

Watermelon Radish - You'll need one watermelon radish. You don't need to peel it but make sure to scrub the outside well and pull off any little roots.

Can of Tuna - You'll need one, 12 ounce can of tuna. I used albacore, but you can use any type you like/have on hand.

Mayonnaise - You'll need 2 tablespoons of mayonnaise for this recipe.

Sriracha - You'll need at least 1 teaspoon of sriracha (or other hot chili paste). If you love spicy food, add a tablespoon instead of a teaspoon!

Kosher Salt - You'll need 1 teaspoon of kosher salt. Kosher salt is less concentrated than regular salt, so half this amount if you are using regular table salt.

Optional Toppings - You can use a pinch of paprika, sesame seeds, and microgreens to top these radish bites. They add great color and flavor!

Slices of watermelon radish on a black cutting board.
A closeup shot of a watermelon radish slice topped with tuna.

More Easy Appetizer Recipes to Try

If you're all about easy apps, then try some of our other favorite recipes. Also, be sure to check out our post on canapé recipes!

A hand holding a radish and tuna appetizer bite.

Tips for Making this Recipe

Specialty Ingredients - If you can't find black sesame seeds at your grocery store, they're available online from The Spice House.

Storing Tips - This recipe is best served the day you make it, as the radishes get a little less crispy in the refrigerator.

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

Yield: Makes 8 to 10 bites

Watermelon Radish Tuna Bites

A plate of watermelon radish appetizer bites.

These delightful little canapés are made with watermelon radish, tuna, and mayo for a crisp, flavorful bite.

Prep Time 10 minutes
Total Time 10 minutes


  • 1 watermelon radish
  • 1 can tuna, drained
  • 2 tablespoons mayonnaise
  • 1 teaspoon sriracha
  • 1 teaspoon kosher salt
  • pinch of paprika
  • 2 tablespoons microgreens


  1. Slice the watermelon radish into ⅛ inch rounds.
  2. Combine the tuna, mayonnaise, and salt in a small bowl and stir till combined.
  3. Add a dollop of the tuna to each of the radish slices. Then sprinkle on a dash of paprika over each tuna and radish bite. Top with microgreens.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 59Total Fat: 3gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 10mgSodium: 283mgCarbohydrates: 2gFiber: 1gSugar: 1gProtein: 5g

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