Tuna Mushroom Melt

Fresh sliced mushrooms, basil, caramelized onions, tuna salad on toast topped with melted swiss cheese.

Tuna Mushroom Melt
Tuna Mushroom Melt

Years ago, my uncle used to eat a version of this sandwich. It actually was a weight watcher’s recipe back then, not sure if it would be today. Today when I realized I hadn’t taken anything out the freezer and was puzzling over what to make when I saw some mushrooms in my refrigerator I needed to use up.

I had one of those light bulb moments that it was time to update this great supper sandwich. Instead of canned mushrooms, I used fresh mushrooms with slices of onion that started to caramelize and some fresh basil. I made an easy tuna salad with relish and olive oil mayonnaise and then added toast and swiss cheese. Yummy!

This is a very flexible recipe, add more or less mushrooms, onions or add garlic if you are in the mood.

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Tuna Mushroom Melt
Prep time: 
Cook time: 
Total time: 
Serves: 2 sandwiches
Fresh sliced mushrooms, basil, caramelized onions, tuna salad on toast topped with melted swiss cheese.
  • 1 can tuna
  • 2 tablespoons olive oil mayonnaise
  • 3 tablespoons sweet relish
  • 6 - 8 oz. fresh mushrooms
  • 1 teaspoon butter
  • 1/3 cup sliced onions
  • about 8 - 12 basil leaves or to taste
  • 4 oz. Swiss cheese
  • 4 pieces bread
  1. Saute the mushrooms and onions in the butter until the onions begin to caramelize and mushrooms are lightly browned. Add some torn basil.
  2. Make tuna salad with mayonnaise and sweet relish.
  3. Toast the bread.
  4. Divide the tuna between the 4 slices of bread.
  5. Top with mushroom mixture.
  6. Top with swiss cheese.
  7. Broil under high heat until the cheese starts to melt.
  8. Serve right away.

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