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The Best Grilled Portobello Mushroom Burger

The Best Grilled Portobello Mushroom Burger
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Indulge in the savory goodness of The Best Grilled Portobello Mushroom Burger. This delightful dish features marinated portobello mushrooms, grilled to perfection, and topped with creamy Swiss cheese, fresh vegetables, and a hint of avocado. Ideal for lunch gatherings or casual weeknight dinners, this burger promises a satisfying meal without compromising on flavor. With simple ingredients and easy preparation steps, even beginner cooks can impress their guests. Enjoy a deliciously rich plant-based option that rivals any traditional burger!

Ingredients

Scale
  • 4 portobello mushroom caps
  • 2 tbsp balsamic vinegar
  • 1 tbsp low sodium soy sauce
  • 1 tbsp olive oil
  • 1 tbsp chopped rosemary
  • 1–1/2 tsp steak seasoning (like Montreal Steak Grill Mates)
  • 4 slices reduced fat Swiss cheese
  • Whole wheat low-calorie buns
  • Fresh vegetables (red onion, tomato, baby spinach, avocado)

Instructions

  1. In a mixing bowl, whisk together balsamic vinegar, soy sauce, olive oil, chopped rosemary, and steak seasoning.
  2. Add the portobello mushroom caps to the marinade and let them sit at room temperature for 20 to 30 minutes.
  3. Preheat the grill or indoor grill pan over medium heat and lightly oil the grate.
  4. Grill the marinated mushrooms for 5 to 7 minutes on each side until tender, basting with leftover marinade.
  5. In the last minute of grilling, top each mushroom with Swiss cheese until melted.
  6. Grill red onion slices for about 1 minute on each side and toast whole wheat buns until golden brown.
  7. Assemble the burger by layering spinach on the bottom bun followed by grilled mushrooms, onions, tomatoes, and avocado.

Nutrition

Find it online: https://quickrecipelady.com/the-best-grilled-portobello-mushroom-burger/