Philly Cheese Portobello Sandwiches

Philly Cheese Portobello Sandwiches

  • Prep: 15 min
  • Cook Time: 12 min
  • Total: 27 min
  • Serving: 4 Servings

Enjoy a modern twist on a classic sandwich with these Philly Cheese Steak sandwiches, made with Portobello mushrooms instead of beef.


  • 2 teaspoons extra-virgin olive oil
  • 1 medium onion, sliced
  • 4 large portobello mushrooms, stems removed, sliced
  • 1 large red bell pepper, thinly sliced
  • 2 tablespoons minced fresh oregano or 2 teaspoons dried
  • 1/2 teaspoon freshly ground pepper
  • 1 tablespoon all-purpose flour
  • 1/4 cup vegetable broth
  • 1 tablespoon reduced-sodium soy sauce
  • 3 ounces thinly sliced provolone cheese
  • 4 whole-wheat buns, split and toasted


  1. Place a large frying pan over medium-high heat and add the oil.
  2. Once the oil is hot, add the onions and sauté for 3 minutes, and then stir in the mushrooms, bell pepper, oregano and pepper, and continue to sauté for 7 additional minutes.
  3. Turn the heat down to low and sprinkle the flour over the vegetables. Pour in the broth and bring the mixture to a simmer, stirring frequently. Cook for 1 minute and then remove from heat.
  4. Spoon the mixture onto each toasted bun and top with a slice of cheese. Serve immediately.

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