MUSHROOM VEGAN BURGER RECIPE RECIPES

Steps:

• Preheat the broiler and line the bottom of a broiler pan with foil. Lightly mix the beef with 1 teaspoon salt and 1/2 teaspoon pepper in a large bowl. Gently form into 4 patties, about 3/4 inch thick. Arrange on the prepared pan and brush both sides with olive oil. Broil until browned, about 4 minutes per side for medium rare.  
• Meanwhile, heat 2 teaspoons olive oil in a large skillet over medium-high heat. Add the onion and cook, stirring, 2 minutes. Add the mushrooms and cook 2 more minutes. Add the Worcestershire sauce and cook until the vegetables are tender, about 2 more minutes. Season with salt and pepper and remove from the heat. Combine the ketchup and mustard in a small bowl and set aside. 
• Top each patty with one-quarter of the mushroom mixture and 1 slice cheese. Return to the broiler to melt the cheese, about 1 minute. 
• Spread the buns with the ketchup mixture; sandwich with the patties and some lettuce. Serve with chips and/or pickles. 

Steps:

• In a large bowl, whisk together vinegar, soy sauce, oil, rosemary, and Montreal steak seasoning.
• Place the mushroom caps in the bowl and toss with sauce, using a spoon to evenly coat. Let stand at room temperature for 20 to 30 minutes, turning a few times.
• Heat the grill or indoor grill pan over medium heat. When hot, brush the grate with oil or lightly spray the grill pan.
• Place the mushrooms on the grill, reserving marinade for basting. Grill for 5 to 7 minutes on each side, or until tender, brushing with marinade frequently.
• Top the mushrooms with cheese during the last minute of cooking.
• While the mushrooms cook, grill the onions about 1 minute on each side and grill the buns until toasted.
• To finish, place the spinach and grilled portobello mushrooms on the buns and top with the grilled onions, sliced tomato and avocado.