Tuna Melt Panini with Grilled Onion and Hatch Chile

This tuna melt panini is loaded with grilled onion and fire-roasted hatch chiles. The melty cheese and spice blend in with the tuna to make this the best tuna melt sandwich ever!

Delicious tuna melt panini with grilled onion and hatch chiles sandwich cut in half and stacked on a plate

Do you love grilled cheese sandwiches?

What about a tuna melt? Well, I combined all of your favorite things into one delicious panini! What better way to celebrate Earth Day than a sustainable, delicious tuna panini sandwich?

When Wild Selections® asked me to share their tuna fish with my readers, I was excited. Earth day is so important to bring awareness about our environment. I am the one you see at the grocery store with the Safe Watch list out when I am at the seafood counter. Wild Selections® seafood is all certified sustainable. This means that all Wild Selections® seafood uses only Marine Stewardship Council (MSC) certified sustainable seafood.

Two cans of Wild Selections tuna


Sustainable Tuna

Wild Selections® even make a donation of 13 cents from every can sold to World Wildlife Fund (WWF) to benefit their sustainable fisheries programs and marine conservation efforts. They have committed a minimum of $1 million to be donated to these programs by 12/31/2018. (And you know that I support 100% companies that give back to make the world a better place!!) Wild Selections is the only brand to “pay it forward” and act on its belief to take care of the oceans for the future, not just fishing sustainably in the present.

The blue MSC eco-label tells you the fish in your can comes from well managed fisheries and healthy fish stocks.  Where the fish is caught is much more critical than how it was caught (limited impact if the fish stock is overfished). All tuna is also Non-GMO Project Verified.

Top view of a delicious tuna melt panini on a plate

Let’s get back to the melty cheese! When the tuna is combined with melty cheese, grilled onion and the spicy hatch chiles…something magical happens. (Note if you would like to see how to prepare fire-roasted hatch chiles, check out these simple instructions.)

Pulling the grilled cheese sandwich apart, you can just see all of the melted cheese.

For this panini, you can use a lot of different kinds of cheese. For my tuna melt panini, I used a flavorful Emmental cheese. It is such a versatile Swiss cheese and it was perfect to pair withWild Selections® Solid White Albacore in water.

Panini is usually made with non-sandwich breads like sourdough, ciabatta, and focaccia. Unfortunately, we are gluten free and those breads are very difficult to find in gluten free versions. I used a gluten free bread that our family likes.

Top view of an open can of Wild Selections Tuna in water

When you look at a can of Wild Selections Tuna, you can see huge chunks of high quality fish. This fresh high quality shines through when you use it in your recipes.

Are you ready to get cooking? These tuna melt panini sandwiches are so easy to make!

Tuna added to grilled cheese on panini machine

Add bread to a panini grill and add a layer of cheese. Add tuna salad on top. (If you don’t have a panini grill, don’t worry! You can make this panini recipe in a frying pan like a regular grilled cheese sandwich.)

  • Just heat up a frying pan and put your butter side down bread on the pan so that the butter melts into the bread.
  • Add your cheese, tuna salad, onion and chiles.
  • Put a piece of buttered bread on top with the butter side facing up.
  • Cook until the under side is slighly brown.
  • Flip it over to cook the other side.)
  • It is ready when your cheese is all melted and your bread is golden on both sides.

Add grilled onion and hatch chiles to the tuna melt on the panini maker

Add fire-roasted hatch chiles and grilled onion on top of the tuna salad.

Grilled cheese tuna melt sandwich with grilled onion and hatch chiles stacked on a plate

How will you enjoy your Earth Day?

5 from 2 votes
Tuna Melt Panini with Grilled Onion and Hatch Chiles
Prep Time
10 mins
Cook Time
5 mins
Total Time
15 mins

Easy grilled cheese tuna melt panini full of sweet grilled onion and spicy hatch chiles.

Course: Main Course, Main Dish
Cuisine: American
Servings: 2 sandwiches
Calories: 559 kcal
Author: Sandi Gaertner
  • 4 slices of bread
  • 1 can Wild Selections White Albacore Tuna in water
  • 1 tablespoon mayonaise
  • 2 tablespoons onion slices
  • 4 slices emmental cheese
  • hatch chiles to taste
  • salt and pepper to taste
  • 1 teaspoon butter
  • 1 teaspoon olive oil
  1. Heat a panini grill, or a small frying pan over medium heat.

  2. Next, open tuna can and drain the water into the sink.

  3. Scoop the tuna into a bowl and add mayonaise, salt, and pepper. Mix well.

  4. In a small pan, add olive oil. Add onion and saute until golden.

  5. Prepare your hatch chiles. You can also use canned green chiles in the store if you prefer.

  6. Butter one side of each slice of bread. Put two slices butter side down on the pan.

  7. Add a slice of cheese to each slice of bread.

  8. Next, add a layer of tuna fish.

  9. Top the tuna with grilled onion and chiles.

  10. Add a slice of cheese on top. Cover with the top piece of bread. Make sure the butter side of this slice faces upward.

  11. Check the bottom slice of bread that is touching the heat. 

  12. When this slice looks golden, flip the sandwich with a spatula to cook the other side.

  13. This is ready when the cheese is all melted.

Nutrition facts per serving (1g)
559kcal | Fat: 30g | Saturated fat: 12g | Cholesterol: 102mg | Sodium: 611mg | Potassium: 195mg | Carbohydrates: 34g | Fiber: 1g | Sugar: 5g | Protein: 34g | Vitamin A: 14.5% | Vitamin C: 0.9% | Calcium: 53.3% | Iron: 9.8%

I was selected for this opportunity as a member of CLEVER and the content and opinions expressed here are all my own.


  1. Yum. Tuna melts. I haven’t had one since I was in my 20’s. Your panini looks so delicious! I will by trying your recipe soon!

  2. I have been thinking about buying panini maker u r tempting me with ur tasty recipe. Anything with may biggg yes

  3. I love that Wild Selections donations to the World Wildlife Fund. I didn’t know this! And this panini looks so good! I think I’ll plan this for a weeknight meal this week!

  4. Yess! Tuna melts are our favourite homemade lunch, especially good when we’re super hungry because they are quick and easy to make, and deliciously filling. But, I’ve never made them with chile before (I have no idea why!) so that’s definitely happening for the next rendition! Thanks for the inspo. 😀

  5. This tuna panini looks absolutely delicious!! Such a great lunch idea for work or on the go. Pinning to save for later.

  6. This looks like perfectly cheesy comfort food!

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