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Grilled portobello mushrooms and sliced red onions topped with chermoula sauce on a white platter.

Grilled Portobello Mushroom Burgers (Vegan)

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5 from 1 review

  • Author: Elaine Gordon
  • Total Time: 24 minutes
  • Yield: 4 1x
  • Diet: Vegan

Description

With their thicker texture and rich flavor, grilled portobello mushrooms make for excellent plant-based burgers! My recipe calls for marinating the portobello mushrooms in a garlicky mustard blend before grilling. Juicy and perfectly charred, serve the mushroom patties inside a soft burger bun and top with all the classic burger fixings!

Ingredients

Scale
  • 4 portobello mushrooms, stems trimmed
  • 1 medium red onion, sliced in 1/2-inch rings
  • 2 tablespoons extra virgin olive oil
  • 1 tablespoon maple syrup
  • 2 large garlic cloves, pressed through a garlic press or finely minced
  • 1 teaspoon Dijon mustard
  • 1 teaspoon fine salt
  • 1/4 teaspoon ground black pepper

Instructions

  1. Preheat grill with the burners on medium heat. Scrub the grill grates clean if needed.
  2. Clean, dry and place the mushrooms and onion rings on a large flat platter or half sheet baking sheet. Set aside.
  3. Prepare the marinade. Whisk together the oil, maple syrup, garlic, mustard, salt and pepper. Use a silicone brush to coat all sides of the mushrooms and onions well. If you have time, allow the marinade to soak into the mushrooms and onions for about 15 minutes.
  4. Place the marinated portobello mushrooms and onion rings directly on the grill directly over medium heat (not offset from the burner). Cook for 8 minutes per side with the grill covered until each side has charred grill marks. The mushrooms should be fork-tender at the thickest part and the onions should be soft and slightly charred as well. For larger/thicker mushrooms, you may need to cook a bit longer.
  5. Remove from grill and serve while hot. 

Equipment

Notes

You can serve the mushrooms and grilled onion rings on a platter with my green tahini sauce, pesto, whipped feta dip, jalapeno chimichurri sauce or chermoula sauce. Serve with brown rice and hummus for a complete meal. Alternatively, serve the portobello mushroom as a "burger" on a toasted whole grain bun with the grilled onion rings, lettuce, tomato and my vegan honey mustard sauce.

  • Prep Time: 8
  • Cook Time: 16
  • Category: Entree
  • Method: Grill

Find it online: https://www.eatingbyelaine.com/grilled-portobello-mushrooms-and-onions-made-into-portobello-mushroom-burgers/