Ultimate Grilled Portobello Mushroom Burgers

Ingredients

• Portobello mushrooms (4 large, stems removed)
• Olive oil (2 tablespoons)
• Balsamic vinegar (2 tablespoons)
• Soy sauce (2 tablespoons)
• Garlic (3 cloves, minced)
• Hamburger buns (4, preferably whole grain or brioche)
• Mayonnaise (4 tablespoons)
• Mustard (2 tablespoons)
• Lettuce (4 leaves, washed and dried)
• Tomato (1 large, sliced)
• Red onion (1 small, thinly sliced)

Instructions

1. In a small bowl, whisk together the balsamic vinegar, soy sauce, minced garlic, and olive oil to create a flavorful marinade.
2. Remove the stems from the portobello mushrooms and place them in a shallow dish. Pour the marinade over the mushrooms, ensuring they are fully coated. Let them marinate for at least 15 minutes to absorb the flavors.
3. Preheat your grill to medium-high heat for optimal cooking.
4. Place the marinated mushrooms on the grill and cook for about 5 minutes on each side, or until they are tender and exhibit beautiful grill marks.
5. While the mushrooms are grilling, lightly toast the hamburger buns on the grill for 1-2 minutes until they are golden brown and warm.
6. On the bottom half of each toasted bun, spread a tablespoon of mayonnaise and a teaspoon of mustard for a creamy and tangy base.
7. Top each bun with a grilled portobello mushroom, followed by a leaf of lettuce, a slice of tomato, and a few rings of red onion.
8. Cap the burger with the top half of the bun and serve immediately while hot.