Portobello Mushroom Tuna Melt

  • prep time5 min
  • total time 17 min
  • serves 2

Thick and meaty portobello mushrooms replace high carb bread to make this delicious bread free tuna melt! Only 539 calories for two!

57 Ratings
Directions for: Portobello Mushroom Tuna Melt


4 Portobello mushrooms, stemmed, gills removed

2 Tbsp olive oil

1 5 oz can albacore tuna packed in water, drained

1 celery stalk, finely chopped

½ cup finely chopped fresh flat-leaf parsley

2 Tbsp fresh lemon juice

Salt and pepper

4 Deli-thin slices Swiss cheese

4 slices tomatoes

½ cup mixed baby greens


1. Preheat the broiler. Brush the mushrooms with 1 tablespoon oil. Transfer to a rimmed baking sheet and broil, turning once, until softened and cooked through, about 10 minutes.

2. While the mushrooms are cooking, in a bowl, combine tuna, celery, parsley, lemon juice, 1/2 teaspoon salt, 1/4 teaspoon pepper, and remaining tablespoon oil.

3. Remove the mushrooms from the oven. Divide tuna mixture among mushrooms, and spread evenly in caps. Top each with a slice of cheese, and broil until cheese melts, about 2 minutes. Top each mushroom with a tomato slice and 2 tablespoons greens, and serve immediately.

See more: Shellfish, Fish, Lunch, Main, Fall, Healthy, Low-Carb, Low-Fat



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