30 Minute or Less/ Sandwiches & Sliders

Tomato + Avocado Tuna Melt

Tracking PixelThis post was kindly sponsored by Blue Harbor Fish Co. All opinions, ideas, and recipes are mine alone. #BlueHarbor

If you love tuna (and I do), you are going to fall madly in love with this fast + easy Tomato + Avocado Tuna Melt. This recipe is so good.  And good for you, too. Made with fresh avocado, wild albacore tuna, tomato and cheese, this recipe is perfect for lunch or a light dinner.

Tomato and cheese on avocado and tuna on an English muffin

And is it just me, or is everything on an English muffin 10 times tastier than normal? Yeah, I thought so, too.

Get back on track with this yummy tuna melt recipe.

Tomato + Avocado Tuna Melt

Tuna is a great ingredient for keeping your budget and your diet in check. There are endless ways to incorporate wild albacore tuna into your meal routine. This Tomato + Avoado Tuna Melt is a yummy way.

You may remember Blue Harbor Fish Co. Wild Albacore Tuna from our Thai Tuna Lettuce Wrap recipe.

Blue Harbor tuna contains three ingredients: Tuna, water, and sea salt. If you are cutting back on sodium, they also offer a no salt added option.

Blue Harbor tuna contains sustainably-caught wild Albacore tuna. What does that mean?

The fish are 100% line caught using methods to safeguard seafood supplies for the future. Click here to learn more about Blue Harbor Fish Co. products.

Packages of wild albacore tuna in water

To make this recipe, just mash the avocado together with the tuna. Then, add a squeeze or two of fresh lime juice plus salt and pepper to taste. This tuna melt recipe comes together like a dream. All it takes is a few minutes and you’ve got yourself a delicious and better for you lunch option.

Tuna with fresh avocado and lime juice

Top each muffin half with a portion of avocado and tuna mix, top with a slice of fresh tomato, and sprinkle with cheese. That’s it.

This recipe is listed as less than 30 minutes, but it is more like 15.

Think of all the ways you can make a tuna melt with Blue Harbor Tuna:
  • Add a little chopped red onion for more color and crunch.
  • Skip the tomato and add sliced mushrooms.
  • Save a few more calories and swap the jack cheese for parmesan.
  • Cutting out all bread? Replace the muffin with a slice of sweet potato (this will increase your cooking time).
  • Is it just me, or does a fried egg on top of this sound amazing?

An English muffin topped with tuna, avoado, tomato and cheese

Love this recipe? Check out more of our ideas:

Balsamic Portabella Mushroom Wraps

Pecan Chicken Wraps + Homemade Honey Mustard

Thai Tuna Lettuce Wraps

Mandarin Chinese Chicken Salad + Homemade Ginger Dressing

Honey Citrus Salad

Fresh Apple Oatmeal Muffins

Tomato Avocado Tuna Melts

The golden + melty Monterrey jack cheese is the perfect topping for this fresh tuna melt.

Blue Harbor tuna is great for lunch or a quick meal. You can find it at your local grocer in pouches (no draining needed) or cans.

Blue Harbor comes from Marine Stewardship Council (MSC) certified fisheries and is dedicated to the sustainability of the world’s fish supply. The MSC is an international non-profit organization established to safeguard seafood supplies for the future.

This recipe idea was sponsored by Blue Harbor Fish Co. As always, But This Cook That only promotes products that we use and trust.

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4.67 from 12 votes

Tomato + Avocado Tuna Melt

Author Buy This Cook That

Buy This

  • 6 ounces Blue Harbor Fish Company Wild Albacore Tuna
  • 1 avocado
  • Juice of half a lime
  • Salt + pepper to taste
  • 4 English muffins split
  • 1 to mato sliced
  • 1 cup finely shredded Monterrey jack cheese

Cook That

  1. Preheat oven to 350 degrees.
  2. In a small bowl, mash avocado with a fork. Add the tuna, lime juice, salt and pepper. Stir until well combined.
  3. Place the English muffin halves onto an ungreased baking sheet. Evenly portion the tuna and avocado mixture onto each English muffin half. Top each with a tomato slice and cheese.
  4. Bake for 10 minutes, then broil for 2 - 3 minutes until the cheese is golden and the edges of the muffins are toasted.
  5. Serve warm.

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  • Reply
    Brian Jones
    January 19, 2018 at 12:17 am

    That sounds like a very tasty lunch, lovely photos too!

    • Reply
      January 19, 2018 at 7:29 am

      Coming from you (Mr Perfect Photos!) I will take that as a compliment. 🙂

  • Reply
    January 19, 2018 at 3:50 am

    What a great combination of different flavours! And I’m with you on the English muffin thing- everything tastes much better on it!

    • Reply
      January 19, 2018 at 7:28 am

      Thank you, Anna.

  • Reply
    Bintu | Recipes From A Pantry
    January 19, 2018 at 5:04 am

    I love a tuna melt for lunch but had never thought to add tomato or avocado to mine – I’m definitely going to be giving this a try

    • Reply
      January 19, 2018 at 7:27 am

      I’m in my avocado phase of putting it in everything. 🙂

  • Reply
    Cliona Keane
    January 19, 2018 at 6:43 am

    This is my kind of recipe! I can just see making this on a lazy Sunday when it’s cold outside!

    • Reply
      January 19, 2018 at 7:27 am

      Thank you!

  • Reply
    January 19, 2018 at 8:31 am

    Hmmm this is a must try. Love avacodos and tomatoes in a mix. Yum

  • Reply
    January 26, 2018 at 11:16 am

    Tuna melts are one of my all-time favorite foods and they’re even better when avocado is added!! This looks delicious!

    • Reply
      January 26, 2018 at 1:31 pm

      Thank you so much! They were a lot of fun to make and eat, and even my husband approved. (Mr. Meat + Potatoes himself.)

  • Reply
    January 26, 2018 at 11:38 am

    I love the addition of avocado to this tuna melt! Looks delicious!

    • Reply
      January 26, 2018 at 1:30 pm

      It helps pull it all together. I was wondering if a fried egg would be good on it, too.

  • Reply
    Elaine @ Dishes Delish
    January 26, 2018 at 12:01 pm

    I haven’t had a tuna melt since I was a teen. My tastes have changed so much over the years. I used to dislike warm mayo, which came upon me suddenly. But I’m ready to try again, especially since you used avocado! I seriously can’t wait to try your delicious tuna melt.

    • Reply
      January 26, 2018 at 1:29 pm

      The avocado makes it, let me tell ya’. I like mine with an extra squeeze of lime, too.

  • Reply
    January 26, 2018 at 12:30 pm

    Your tuna melts look so good! I love tuna melts…these look delightful and so elegant too!

    • Reply
      January 26, 2018 at 1:28 pm

      I loved them, not too heavy but feel-good food. Thanks for your kind words.

  • Reply
    January 26, 2018 at 12:46 pm

    Yum, this looks delicious. I know that my mother and I would love this for a lunch. I’ll have to make it soon.

    • Reply
      January 26, 2018 at 1:28 pm

      I hope you love it. Easy to make and adapt to your own taste. 🙂

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