Taking inspiration from the classic Philly cheesesteak, these warm sandwiches are filled with sauteed mushrooms, peppers and onions and finished with melty provolone cheese.
Heat a nonstick pan or wok over medium high heat. Add cooking oil and then mushrooms to heated oil. Saute until mushrooms are golden brown, 5 to 6 minutes.
Add peppers and onions to mushrooms and saute until peppers and onions are tender, 3 to 4 minutes.
Remove pan from heat. Use your hands to break cheese into small pieces and place over hot vegetables (cheese should start to melt). Cover pan with a lid or foil to keep warm.
Toast rolls.
Toss plums, arugula and almonds in olive oil and vinegar. Top with black pepper.
Assemble sandwiches by spreading both sides of rolls with mayonnaise and then adding vegetables and cheese.
Serve sandwiches with salad on the side and enjoy!