My delicious Grilled Portobello Mushroom Burger Recipe will change your life. Whether you are a diehard vegetarian or looking for a delicious veggie burger, this portobello burger will make you one happy person.
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❤️ Why you'll love this recipe
- Grilled portobello mushrooms are a delicious meatless option for a hearty meal that is full of flavor and endless possibilities.
- Marinated portobello mushrooms are the perfect vegetarian burger replacement for a ground beef burger.
- My meat eaters love this grilled portobello burger recipe as much as a beefy burger.
🧾 Ingredient List
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- portobello mushroom caps
- balsamic vinegar
- light soy sauce
- olive oil
- liquid smoke
- Worcestershire sauce
- Italian seasoning
- garlic powder
- onion powder
- black pepper
- Kosher salt
- non-stick cooking spray
- 2 slices cheddar cheese optional
- skinny basil pesto or store-made pesto, optional topping
- lettuce, optional topping
- tomato, optional topping
- sliced onion, optional topping
- onion rolls or any roll of choice.
🍲 Equipment
- Stainless Steel Mixing Bowls
- Grill Pan
- Measuring Spoons and Cups
- small mixing bowl
🔪 Instructions
This is an overview of the recipe. The full instructions are below in the recipe card.
Use a wet paper towel to wipe clean the tops of the portobello caps. Then turn the mushrooms over and gently remove and discard the black gills underneath the mushrooms. See photo 1, below.
Step 1: Remove the black gills from the portobello mushroom.
Step 2: Make the portobello mushroom marinade.
Step 3: Marinate the portobello mushrooms for at least 30 minutes up to 12 hours.
Step 4: Grill the portobello mushrooms and top with your favorite toppings.
Eileen's Tips for Success
- Be sure to remove and discard the black gills from under the mushroom. They do not taste great and will impact the results.
- The portobello mushrooms can sit in the marinade for a few hours before grilling.
Variations
Do you want to change up this recipe?
Vinegar: Use any of your favorite types such as red wine vinegar or champagne vinegar for a tasty variation.
Seasonings: Use any favorite seasoning blends for different flavors such as fajita seasoning, Cajun seasoning, Steak Seasoning, Italian seasoning, or taco seasoning.
Make ahead, storage, and freezer tips
Leftovers can be kept in the refrigerator in an airtight covered container for up to 3 days.
Frequently Asked Questions
Marinate the mushrooms for at least 30 minutes up to 12 hours.
It will take about 8 minutes to grill the mushrooms.
A cast iron pan or saute pan can be used to make these mushrooms. A Blackstone or flat-top grill can also be used to make them.
Serving Suggestions
Some of my favorite toppings for portobello sandwiches are avocado slices, tomato, roasted red peppers, lettuce, onions, basil aioli, ranch dressing, or blue cheese dressing.
If you are Vegan or prefer a vegan meal, use vegan mayo dairy-free cheese, and tamari.
Guacamole and Pico de Gallo are both favorite toppings for these portobello burgers.
Cheese is always a great topping, from American cheese, cheddar, and havarti, to Swiss cheese. Use any of your favorite cheese types.
Serve along with an easy Mexican bean salad for a vegetarian dinner.
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Thank you for your continued support. I am forever grateful.
Eileen xo
If you click on the number of servings in the recipe card you can adjust the measurements up or down for the exact number of servings you need.
If you love this recipe please give it 5 stars! ⭐️⭐️⭐️⭐️⭐️
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Grilled Portobello Mushroom Burger Recipe
Equipment
Ingredients
Instructions
- Remove the black gills from the mushroom caps and discard the gills. Place the mushroom caps in a plastic storage bag. Set aside.
- In a small mixing bowl, combine and whisk together balsamic vinegar, low-sodium soy sauce, olive oil, liquid smoke, Worcestershire Sauce, Italian Seasoning, garlic powder, onion powder, ground black pepper, and salt.
- Pour the balsamic marinade into the plastic storage bag with the mushroom caps.
- Seal the bag and place in the refrigerator for at least 30 minutes to 12 hours to marinate the mushroom caps.
- Preheat grill pan or grill to medium/high heat to 450°F. Spray grill pan or grates with non-stick cooking spray
- Remove portobello mushrooms from marinade. Pat dry.
- Be sure heat is medium, add the marinated mushrooms to the preheated grill pan or grill. Let cook about 5-6 minutes per side, until the mushrooms are tender and cooked through. If adding cheese, place a slice of cheese on each portobello cap with 2 minutes left to grill.
- Toast onion rolls during last 2 minutes of grilling the mushroom burgers for toasted buns.
- Top with your favorite sides: lettuce, tomato, grilled onions, basil pesto, or any of your personal favorites.
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