Prepare your mushroom caps by removing any stems and using a spoon to scrape out the gills under the caps.
4 large Portobello mushrooms
Place the mushrooms on a rimmed plate and drizzle with olive oil, balsamic vinegar, garlic powder, onion powder, salt, and pepper. Use your hands to help coat the mushrooms on both sides.
Heat a grill or grill pan over medium heat. Place the mushrooms, gill side up onto the grill or grill pan. Cook for 5-7 minutes per side, or until the mushrooms are tender. If you are using the grill, close the lid while cooking.
Top with a slice of cheese (optional) and allow to melt. Place the mushrooms onto the buns and serve with desired fixings. Enjoy!
4 Hamburger buns
Video
Notes
If you don't have any vinegar, you can also use worcestershire sauce!
You can make this recipe on the grill or in a grill pan on the stove!
Make sure to use large portobello mushrooms! The smaller caps won't fit buns, as mushrooms tend to shrink.
Use plenty of oil on the bars of the grill to make sure the mushrooms don't stick! Mushrooms are very delicate and can tear easily.