1. Large portobello mushrooms
2. Extra virgin olive oil
3. Balsamic vinegar
4. Freshly minced garlic
5. Soy sauce
6. Italian seasoning
7. Salt
8. Pepper
9. Buns (brioche, ciabatta, or burger buns)
10. Optional toppings: Roasted red peppers, fresh mozzarella, pesto, caramelized onions, arugula

1. Prepare the Marinade: In a bowl, whisk together the olive oil, balsamic vinegar, soy sauce, minced garlic, Italian seasoning, salt, and pepper.
2. Marinate the Mushrooms: Gently clean the portobello mushrooms and remove the stems. Place them in a shallow dish and pour the marinade over them. Let them marinate for at least 30 minutes, or up to a few hours, flipping them occasionally to ensure they are evenly coated.
3. Cook the Mushrooms: Grill the mushrooms for about 5-7 minutes per side on medium heat, or roast them in the oven at 400°F (200°C) for about 20-25 minutes, flipping them halfway through.
4. Prepare the Buns: While the mushrooms are cooking, lightly toast your buns. You can also spread some butter or garlic aioli on the buns for extra flavor.
5. Assemble the Sandwiches: Once the mushrooms are cooked, place them on the toasted buns and add your favorite toppings.
6. Serve and Enjoy: Serve the sandwiches immediately and enjoy.

Don’t Overcrowd the Pan: If you’re roasting the mushrooms in the oven, make sure to give them enough space on the baking sheet.

Pat the Mushrooms Dry: After marinating, gently pat the mushrooms dry with a paper towel before cooking them.,

Use a Good Quality Bun: Choose a bun that is sturdy enough to hold all the ingredients without falling apart.

Get Creative with Toppings: Don’t be afraid to experiment with different toppings to find your perfect combination.

Add a Sauce: A drizzle of balsamic glaze or a dollop of garlic aioli can add an extra layer of flavor to your sandwich.

Marinate for Maximum Flavor: The longer you marinate the mushrooms, the more flavorful they will be.