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Sheet Pan Vegetarian Cheesesteaks

Course: Main Course
Cuisine: American
Keyword: Mushrooms, Peppers, Sandwiches, Vegetarian
Servings: 4

Ingredients

  • 1 ½ lb (750 g) portobello mushrooms caps (6-8) brushed and gills removed, sliced to ⅛ inch thickness
  • 1 medium yellow onion (about 1 cup) thinly sliced
  • 1 green bell pepper thinly sliced
  • 1 red bell pepper thinly sliced
  • 1 T Worcestershire sauce
  • 1 T reduced sodium soy sauce
  • 2 T olive oil
  • ½ tsp salt
  • ½ tsp pepper
  • 6-8 slices provolone cheese cut in half
  • 4 small hoagie rolls or one long soft French bread, cut into 4 pieces
  • 3 T mayonnaise plus additional for serving (optional)

Instructions

  • Make sure an oven rack is approximately 6 inches from the heating element. Preheat oven to broil setting. Prepare a large baking sheet (or two small quarter sheet pans) by covering with foil and spraying with cooking spray.
  • Place mushrooms and peppers and onions in two separate medium bowls. Combine Worcestershire sauce, soy sauce, olive oil, salt and pepper in a small bowl or measuring cup. Mix well to combine. Divide between the mushrooms and the peppers/onions and carefully toss to combine. Spread out evenly in one layer on the prepared baking sheet. (You can combine the mushrooms and the peppers and onions if you prefer, but the mushrooms do produce liquid and separating them allows one or the other to be cooked longer if needed.)
  • Place in oven and broil for approximately 7 minutes. Stir vegetables and remove some of the water from the mushrooms if desired. Return to the oven for an additional 5-10 minutes until soft and beginning to brown. (The timing will depend on how hot your broiler is and the thickness of the vegetables.)
  • While vegetables are cooking, split the rolls and spread mayonnaise over the cut sides. Place cut side down in a hot pan to toast them.
  • When vegetables are finished, remove from oven and divide between the rolls, placing the vegetables on one side. Place 2-3 half pieces of cheese on each sandwich. (You can put it over the veggies or on the other side. Your choice. Place on a clean baking sheet (or just remove the foil from the one you used) and broil for an additional one to two minutes until the cheese is melted.