Roasted Portobello Mushroom Cheeseburgers With Caramelized Onions And Pimento Aioli Recipes

Steps:

• Prepare a grill for medium-high heat.
• Put the onions in a medium bowl and cover with ice water. Let the onions soak 10 minutes while you prep the patties and pimento sauce.
• Combine the beef with 2 tablespoons of the Worcestershire sauce, 1 teaspoon salt and several grinds of black pepper in a medium bowl. Form the meat mixture into eight 3-ounce patties. A quick and easy way to do this is to divide the mixture into 8 piles. Place a pile on top of a deli container lid. Place the top of a second deli container lid against the pile, press down evenly and firmly and watch as a perfect patty forms. Repeat with the remaining meat mixture. Make a slight indentation in the middle of each patty with your thumb to keep the patty from shrinking as it cooks. Set aside.
• Add the cream cheese, pimentos, mayonnaise, cayenne, 1/4 teaspoon salt and the remaining 1 teaspoon Worcestershire to a medium bowl and stir until well combined. Drain the onions and pat dry.
• Lightly brush the grill grates with oil. Grill the patties, indentation-side up, until marked on the bottom, about 3 minutes. Flip and grill until marked on the second side and slightly firm, about 2 minutes more for medium rare. Top each patty with 1 slice cheese, cover the grill and cook until melted, about 1 minute. Remove to a plate and let rest for a few minutes. Toast the buns cut-side down, 1 to 2 minutes.
• Top each bottom bun with 2 burgers. Top the burgers with lettuce and the onions and spread the inside of the top buns with the pimento sauce. Top the burgers with the top buns and secure with a toothpick if desired. Serve with dill pickle and French fries.

Steps:

• For the burgers: In a shallow baking dish, use a whisk to combine the lemon juice, olive oil, Worcestershire, thyme, and garlic powder. Place mushrooms in the marinade, cover, and refrigerate for at least 1 hour. Turn over the mushrooms, cover again, and refrigerate at least another hour. (Mushrooms can marinate for several hours.)
• For the onions: In the meantime, make the onions. In a skillet, heat the olive oil over medium heat. Add the onions and cook about 5 minutes, stirring occasionally. Add the water, cover, and reduce heat to low. Cook 20 to 30 minutes, stirring occasionally, until the onions are golden brown. Remove the pan from the heat. Season the onions with salt and pepper. Set aside.
• For the aioli: Combine all ingredients in a small bowl. Refrigerate until serving time.
• To finish the burgers: Preheat oven to 450 degrees F. Remove mushrooms from marinade and season with salt and pepper on both sides. Place the mushrooms on a baking sheet, gill sides up. Bake for 5 minutes. Remove from the oven and arrange cheese and caramelized onions on the gills of each mushroom and bake another 5 minutes, until the cheese is melted and bubbly. Place 1 mushroom on each muffin and garnish with aioli and arugula. Serve immediately.

Steps:

• Preheat oven or toaster oven to 425 degrees F (220 degrees C).
• Place mushroom caps, gill side up, on baking sheet. Drizzle with soy sauce and add a few grinds of black pepper to each cap.
• Bake for 25 minutes. Remove from oven, and sprinkle 1 1/2 tablespoon blue cheese onto each cap. Return to oven and bake an additional 10 minutes, or until cheese is fully melted.