Portobello Mushroom Burger Sandwich Recipe

Portobello Mushroom Burger Sandwich Recipe

Portobello Mushroom Burger Sandwich Recipe


If you’re looking for a delicious and healthy alternative to a traditional burger, look no further than a portobello mushroom burger sandwich. This vegetarian option is packed with flavor and nutrients, making it a great choice for anyone wanting to incorporate more vegetables into their diet. The meaty texture of the portobello mushrooms makes them the perfect substitute for a beef patty, and when paired with your favorite burger toppings, it’s a meal that everyone can enjoy. So, let’s get cooking!

Ingredients (for 2 servings)

  • 2 large portobello mushrooms
  • 2 burger buns
  • 2 slices of cheese (optional)
  • 1 onion, sliced
  • 1 tomato, sliced
  • Handful of lettuce leaves
  • 2 tablespoons olive oil
  • 2 tablespoons balsamic vinegar
  • 1 garlic clove, minced
  • Salt and pepper to taste


  1. Start by preparing the portobello mushrooms. Gently remove the stems and clean the caps with a damp towel or sponge. Be careful not to break the mushrooms as they will be used as the burger patties.
  2. In a small bowl, whisk together the olive oil, balsamic vinegar, minced garlic, salt, and pepper. This will be used as the marinade for the mushrooms.
  3. Place the portobello mushrooms in a shallow dish and pour the marinade over them. Make sure that both sides of the mushrooms are well-coated. Allow them to marinate for at least 30 minutes, flipping them halfway through.
  4. While the mushrooms are marinating, heat a grill pan or skillet over medium heat. Once hot, add the sliced onions and cook until they become soft and caramelized, about 10 minutes. Set aside.
  5. In the same pan, cook the marinated portobello mushrooms for 4-5 minutes per side, or until they become tender and slightly charred. If desired, add a slice of cheese to each mushroom during the last minute of cooking to melt it.
  6. Toast the burger buns until they are lightly browned and slightly crispy.
  7. Assemble your portobello mushroom burger sandwiches by placing a mushroom on the bottom half of each bun. Top with the caramelized onions, tomato slices, and lettuce leaves. Finish off with the top half of the bun.
  8. Serve your portobello mushroom burger sandwiches immediately and enjoy!


  • You can customize your portobello mushroom burger sandwich by adding any additional toppings you like, such as avocado slices, pickles, or your favorite sauce.
  • If you don’t have a grill pan or skillet, you can also cook the marinated mushrooms on a barbecue grill for that extra smoky flavor.
  • Make sure to choose fresh and firm portobello mushrooms for the best results. Avoid mushrooms that are slimy or have a strong odor.


The portobello mushroom burger sandwich is a tasty and versatile vegetarian option that can satisfy even the most devoted meat lover. By using portobello mushrooms as the main ingredient, you can enjoy a meaty and flavorful burger alternative that is also rich in essential nutrients. So, next time you’re craving a burger, give this recipe a try and savor the deliciousness of a portobello mushroom burger sandwich!


1. Can I use other types of mushrooms for this recipe?
While portobello mushrooms are the most commonly used for burger sandwiches, you can also experiment with other varieties such as cremini or shiitake mushrooms. They may have a slightly different taste and texture, but they can still make a delicious burger substitute.

2. Can I make this recipe vegan?
Yes, you can easily make this recipe vegan by omitting the cheese or using a dairy-free alternative. You can also replace the buns with vegan-friendly options, such as lettuce wraps or gluten-free bread.

3. Can I prepare the mushrooms ahead of time?
The marinated mushrooms are best cooked immediately to preserve their flavor and texture. However, you can marinate the mushrooms in advance and cook them just before serving. Keep in mind that the mushrooms may release some liquid during marination, so drain them before cooking.

4. Can I store leftover mushrooms?
If you have any leftover cooked mushrooms, you can store them in an airtight container in the refrigerator for up to 2 days. Reheat them in a pan or microwave before using them in sandwiches or salads.

5. Can I freeze the marinated mushrooms?
It’s not recommended to freeze the mushrooms after marination, as they may become mushy and lose their texture. It’s best to marinate and cook the mushrooms fresh for the best results.

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