Experience a delightful twist on the classic burger with this portobello mushroom burger recipe. Perfect for vegetarians and meat-lovers alike, these juicy mushroom caps are marinated and grilled to perfection, offering a savory and satisfying alternative to traditional beef patties.
While most of the ingredients for this recipe are common pantry staples, you might need to pick up portobello mushroom caps if you don't have them on hand. These large, meaty mushrooms are the star of the dish and can usually be found in the produce section of your supermarket. Additionally, balsamic vinegar and dried basil might not be in everyone's kitchen, so make sure to grab those if needed.

Ingredients For Portobello Mushroom Burger Recipe
Portobello mushroom caps: Large, meaty mushrooms that serve as the burger patty.
Olive oil: Used to marinate the mushrooms and add richness.
Balsamic vinegar: Adds a tangy, slightly sweet flavor to the marinade.
Dried basil: Provides a hint of herbaceous flavor.
Dried oregano: Adds a Mediterranean touch to the marinade.
Garlic powder: Infuses the mushrooms with a subtle garlic flavor.
Salt and pepper: Essential for seasoning and enhancing the flavors.
Toasted burger buns: The base for assembling the burger.
Cheese: Optional, but adds a creamy, melty layer to the burger.
Lettuce: Fresh and crisp, perfect for topping the burger.
Tomato: Adds juiciness and a touch of sweetness.
Onion: Provides a bit of crunch and sharpness.
Technique Tip for This Recipe
To enhance the flavor of the portobello mushrooms, marinate them for at least 30 minutes before grilling. This allows the olive oil, balsamic vinegar, and spices to penetrate the mushrooms, resulting in a more robust taste. Additionally, pressing the mushrooms gently with a spatula while grilling helps to release excess moisture, ensuring a meatier texture.
Suggested Side Dishes
Alternative Ingredients
portobello mushroom caps - Substitute with large cremini mushrooms: They have a similar texture and flavor profile, making them a good alternative.
olive oil - Substitute with avocado oil: Avocado oil has a high smoke point and a mild flavor, suitable for grilling.
balsamic vinegar - Substitute with red wine vinegar: Red wine vinegar provides a tangy flavor that complements the mushrooms well.
dried basil - Substitute with dried thyme: Dried thyme offers a similar earthy flavor that pairs well with mushrooms.
dried oregano - Substitute with dried marjoram: Dried marjoram has a slightly milder taste but still provides a similar herbaceous note.
garlic powder - Substitute with onion powder: Onion powder can add a similar depth of flavor to the mushrooms.
salt - Substitute with soy sauce: Soy sauce adds a salty and umami flavor that enhances the taste of the mushrooms.
pepper - Substitute with cayenne pepper: Cayenne pepper adds a bit of heat and spice to the dish.
toasted burger buns - Substitute with lettuce wraps: Lettuce wraps provide a low-carb, gluten-free alternative to traditional buns.
cheese - Substitute with avocado slices: Avocado slices add creaminess and a rich flavor without the dairy.
lettuce - Substitute with spinach: Spinach offers a similar crunch and nutritional benefits.
tomato - Substitute with roasted red peppers: Roasted red peppers add a sweet and smoky flavor to the burger.
onion - Substitute with caramelized onions: Caramelized onions provide a sweet and savory flavor that enhances the overall taste.
Other Alternative Recipes
How to Store or Freeze This Dish
- Allow the portobello mushroom caps to cool completely after grilling. This prevents condensation and sogginess when stored.
- Place the cooled mushrooms in an airtight container or wrap them tightly in plastic wrap. Ensure there's minimal air to maintain freshness.
- Store the wrapped mushrooms in the refrigerator. They can last up to 3-4 days when properly stored.
- For longer storage, consider freezing the grilled mushrooms. Place them on a baking sheet lined with parchment paper and freeze until solid.
- Once frozen, transfer the mushrooms to a freezer-safe bag or container. Label with the date to keep track of freshness.
- When ready to use, thaw the mushrooms in the refrigerator overnight. Reheat them on a grill or in a skillet over medium heat until warmed through.
- If you have leftover assembled burgers, store them in an airtight container in the refrigerator. It's best to separate the buns from the mushrooms to prevent sogginess.
- For freezing assembled burgers, wrap each burger individually in aluminum foil or plastic wrap, then place them in a freezer-safe bag. Thaw and reheat as needed.
- To reheat, preheat your oven to 350°F (175°C). Place the mushrooms or assembled burgers on a baking sheet and heat for about 10-15 minutes or until warmed through.
- Avoid microwaving the mushrooms as it can make them rubbery. Opt for reheating in an oven or on a grill for the best texture and flavor.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the portobello mushroom caps on a baking sheet lined with parchment paper. Heat for about 10-15 minutes until warmed through. This method helps maintain the mushroom's texture and flavor.
For a quicker option, use a microwave. Place the portobello mushroom burger on a microwave-safe plate. Cover with a damp paper towel to retain moisture. Heat on medium power for 1-2 minutes, checking halfway through to avoid overcooking.
If you have an air fryer, preheat it to 350°F (175°C). Place the portobello mushroom caps in the basket and heat for 5-7 minutes. This method gives a slightly crispy exterior while keeping the inside tender.
For stovetop reheating, use a non-stick skillet over medium heat. Add a small amount of olive oil to the pan. Place the portobello mushroom caps in the skillet and cover with a lid. Heat for about 3-5 minutes on each side until warmed through.
If you have a grill pan, preheat it over medium heat. Place the portobello mushroom caps on the grill pan and cover with a lid. Heat for about 3-5 minutes on each side, ensuring they are heated evenly.
To reheat the burger buns, place them in a toaster or toaster oven until they are warm and slightly crispy. This will give your portobello mushroom burger a fresh, just-made taste.
For reheating the entire assembled portobello mushroom burger, wrap it in aluminum foil and place it in a preheated oven at 350°F (175°C) for about 10-15 minutes. This method helps keep the burger moist and evenly heated.
Best Tools for This Recipe
Grill: A cooking device that uses direct heat to cook food, perfect for giving the portobello mushrooms a smoky flavor.
Grill pan: An alternative to a grill, this pan has raised ridges to mimic the grilling effect on a stovetop.
Mixing bowl: A large bowl used to combine the olive oil, balsamic vinegar, and seasonings for the marinade.
Basting brush: A tool used to apply the marinade evenly onto the portobello mushroom caps.
Tongs: A utensil for flipping and handling the mushrooms on the grill or grill pan without piercing them.
Knife: Used to remove the stems from the portobello mushroom caps and to slice toppings like lettuce, tomato, and onion.
Cutting board: A surface for safely cutting and preparing the mushrooms and toppings.
Measuring spoons: Tools to measure out the olive oil, balsamic vinegar, and seasonings accurately.
Spatula: Useful for assembling the burgers and handling the toasted buns.
Toaster: An appliance to toast the burger buns to a golden brown.
Plate: A dish to assemble and serve the finished portobello mushroom burgers.
How to Save Time on This Recipe
Pre-make the marinade: Mix the olive oil, balsamic vinegar, and spices ahead of time and store in the fridge.
Use a grill pan: A grill pan heats up faster than an outdoor grill, saving you time.
Pre-toast the buns: Toast the burger buns while the mushrooms are grilling to streamline the process.
Slice toppings in advance: Prepare lettuce, tomato, and onion slices earlier in the day.
Cheese ready: Have the cheese slices unwrapped and ready to place on the mushrooms.

Portobello Mushroom Burger
Ingredients
Main Ingredients
- 4 Portobello mushroom caps stems removed
- 2 tablespoon Olive oil
- 1 tablespoon Balsamic vinegar
- 1 teaspoon Dried basil
- 1 teaspoon Dried oregano
- 1 teaspoon Garlic powder
- to taste Salt and pepper
- 4 Burger buns toasted
- 4 slices Cheese optional
- to taste Lettuce, tomato, onion for topping
Instructions
- 1. Preheat grill or grill pan over medium heat.
- 2. In a mixing bowl, combine olive oil, balsamic vinegar, basil, oregano, garlic powder, salt, and pepper.
- 3. Brush the mixture onto both sides of the portobello mushroom caps.
- 4. Grill the mushrooms for about 5-7 minutes on each side until tender.
- 5. If using cheese, place a slice on each mushroom cap during the last minute of grilling to melt.
- 6. Assemble the burgers with toasted buns, grilled mushrooms, and your favorite toppings.
Nutritional Value
Keywords
Suggested Appetizers and Desserts
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