Grilled Portobello Burgers

Total Time

Prep/Total Time: 25 min.


4 servings

Updated: Oct. 23, 2022
You don't miss the meat on this hearty burger. The veggies, mayo and cheese fill you up with plenty of flavor. —Mary Haas, Hewitt, New Jersey
Grilled Portobello Burgers Recipe photo by Taste of Home


  • 4 large portobello mushrooms (4 to 4-1/2 inches), stems removed
  • 6 tablespoons reduced-fat balsamic vinaigrette, divided
  • 4 slices red onion
  • 1 cup roasted sweet red peppers, drained
  • 3 ounces fresh mozzarella cheese, cut into 4 slices
  • 4 kaiser rolls, split
  • 1/4 cup fat-free mayonnaise


  1. Brush mushrooms with 4 tablespoons vinaigrette. Grill mushrooms and onion, covered, over medium heat 3-4 minutes on each side or until tender. Top mushrooms with red peppers, onion and cheese. Grill, covered, 2-3 minutes longer or until cheese is melted. Grill rolls, cut side down, 1-2 minutes or until toasted.
  2. Spread roll bottoms with mayonnaise and drizzle with remaining vinaigrette. Top with mushrooms; replace roll tops.

Nutrition Facts

1 burger: 329 calories, 11g fat (4g saturated fat), 19mg cholesterol, 860mg sodium, 42g carbohydrate (8g sugars, 3g fiber), 12g protein.