• 1 large portobello mushroom, stem removed
  • 1 teaspoon olive oil
  • 1/8 teaspoon dried oregano
  • Salt and pepper, to taste
  • 1 plum tomato, chopped
  • 2 pitted green olives, chopped
  • 1 tablespoon mayonnaise
  • 1 multigrain hamburger bun, split and toasted
  • 1 lettuce leaf
  • 1 slice provolone cheese


  • Brush mushroom with oil and sprinkle with oregano. Season with salt and pepper. Using long-handled tongs, moisten a paper towel with cooking oil and lightly coat the grill rack. Grill mushroom, covered, over medium heat or broil 4 in. from the heat for 6-8 minutes on each side or until tender.
  • Combine tomato and olives; season with salt and pepper. Spread mayonnaise over bun bottom. Top with lettuce, mushroom, cheese and tomato mixture; replace bun top. Yield: 1 serving.

Source:              http://www.tasteofhome.com/Recipes/Portobello-Burger-with-Muffuletta-Topping