Portobello and Pesto Burgers

Portobello and Pesto Burgers

  • Prep: 10 min
  • Cook Time: 15 min
  • Total: 25 min
  • Serving: 4 Servings

Even the most loyal carnivore will cheat on their regular burger with this vegetarian treat! With each bite packing a punch of flavor, you won’t even miss the beef.  


  • 1/2 cup purchased pesto sauce
  • 1/4 cup Dijonnaise
  • 4 extra large hamburger buns
  • 4 Portobello mushrooms
  • olive oil
  • roasted red peppers from a jar, drained and sliced into strips
  • 4 cups watercress, escarole or arugula
  • 4 slices provolone cheese


  1. Prepare your barbecue or oven broiler.
  2. Mix the pesto and Dijonnaise in a bowl. Add salt and pepper and stir well.
  3. Cut hamburger buns in half and grill cut side down. Remove from grill and generously slather with pesto and Dijonnaise sauce.
  4. Clean mushrooms by wiping clean of any dirt or debris. Do not rinse. Remove stems and scrape out dark grills.
  5. Brush mushrooms on front and back with olive oil, and season well with salt and pepper. Grill mushrooms on each side for no more than 5 minutes. Put 1 mushroom on each hamburger bun and top with cheese, peppers and watercress. Serve immediately.


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