Portobello Mushroom Burgers – Match Foodie Finds

These portobello mushroom burgers are one of the most delicious vegetarian sandwiches you’ll ever have! Not only do they look like regular burgers, but they also have a similar texture and flavor. 

The BEST Portobello Mushroom Burger Recipe

Even the biggest meat-heads out there will love these meatless burgers! The secret is the marinade for the mushrooms. It gives this precious fungus a meaty, savory flavor that is sure to make your mouth water.

And, of course, nothing goes with a burger quite like some tasty toppings! We kept it simple yet delicious with some red onions, pepper jack cheese, and a sauce made of ketchup and garlic hummus. But feel free to get creative and add your favorite toppings!

Health Benefits of Portobello Mushroom Burgers

Portobello mushroom burgers are an easy and delicious way to enjoy the taste of beef without all the unhealthy saturated fat. Here are just a few of the reasons why you should consider eating portobellos instead of beef patties: 

1. High in fiber and low in calories: Portobello mushrooms are an excellent source of dietary fiber and have very few calories, making them a great choice for healthy living.
2. Rich in vitamins & minerals: Portobellos are rich in B vitamins, zinc, magnesium, selenium, and potassium. All of these nutrients have been linked to various health benefits, such as boosting the immune system and reducing inflammation.
3. Heart-healthy: Not only do portobellos contain no saturated fat, but they also contain compounds known as sterols that can help to reduce cholesterol levels and improve heart health. 
4. Delicious: Portobello mushrooms have a delicious, meaty taste and texture that will satisfy even the most discerning burger lover! They go great with any type of bun or condiment, so you can make your favorite kind of burger without compromising on flavor.

Featured Ingredients

• Portobello mushrooms: use large mushrooms as they have a great earthy flavor and are just about burger patty size!
• Red onion: we used red onion as the burger topping for this recipe, but feel free to use your favorite burger toppings!
• Pepper jack cheese: a great melty cheese to go on top of the mushrooms. You can also use your favorite vegan cheese!
• Chopped greens: any kind will do. We recommend arugula, spinach, romaine, etc.
• Onion burger buns: we love the flavor that onion buns bring to the table! Use any kind of hamburger buns you like, though.
• Garlic hummus: you could get plain ol’ hummus, but garlic makes everything better!
• Ketchup: adds a layer of sweetness and tang that balances this burger out perfectly.

What’s In Our Homemade Mushroom Marinade?

Our grilled portobello mushroom marinade is quick, easy, and absolutely delicious! It’s the secret sauce to making these portobello mushroom burgers taste like the real deal. Here’s what’s in ’em:

• Worcestershire sauce
• Balsamic vinegar
• Lemon juice
• Olive oil 
• Garlic
• Onion 
• Brown sugar 
• Dijon mustard

Simple Instructions

PREPARE MARINADE

Add all of the marinade ingredients to a large bowl and whisk to combine. 

MARINATE MUSHROOMS

Dredge the mushrooms in the marinade a few times to coat them. Let the mushrooms marinate for 1 hour, flipping them halfway through. 

PREHEAT OVEN

Preheat the grill to 400ºF and clean the grill grates. 

SEASON & GRILL ONIONS

Next, place the onion rounds on a plate, drizzle them with olive oil, and season them with salt and pepper.  

When the grill is heated, transfer onions to the grill over indirect heat. Grill the onions for 10 minutes, flipping halfway. 

GRILL MUSHROOMS

Transfer the mushrooms cap side down on the grill over indirect heat. Grill the mushrooms for 3 minutes on the cap side, flip, then grill them for an additional 2 minutes. 

Place a slice of cheese on the mushroom and close the grill for 1 minute, allowing the cheese to melt. Remove them from the grill.

MAKE SAUCE

While the mushrooms are cooking, combine the hummus and the ketchup in a bowl. 

ASSEMBLE BURGER

Now it’s time to put all this goodness together!

Place the bottom of the burger bun on a plate, and transfer ½ cup of the greens onto the bun. Top the greens with the mushroom patty, and top the patty with grilled onion rounds. 

ADD SAUCE, SERVE + ENJOY

Lastly, slather the top bun with 2-3 tablespoons of the hummus sauce to finish the burger. Serve immediately. Enjoy!

Topping Ideas

Just because this is a portobello mushroom burger doesn’t mean it has to be boring! Here are some fun topping ideas to make your burger even more delicious:

Storage

Store any leftover portobello mushrooms in an airtight container in the fridge for up to 3 days.  

You want to store the mushrooms separately from the toppings so that the mushrooms don’t get soggy. The toppings can go in smaller airtight containers or Ziploc bags.

Can I freeze my portobello mushroom burgers?

We don’t recommend freezing portobello mushroom burgers, as the texture will be compromised when you thaw and reheat. We recommend making fresh burgers each time!

Portobello Mushroom Burgers

These portobello mushroom burgers not only look like regular burgers, but they also have a similar texture and flavor. 

Prep:1 hour hour 20 minutes minutes

Cook:17 minutes minutes

Total:1 hour hour 37 minutes minutes

Fat 19

Carbs 45

Protein 10

Ingredients

Other Ingredients

• 4 large portobello mushrooms destemmed, rinsed, and dried
• ½ teaspoon kosher salt

Burger Ingredients

• 1 large red onion sliced into rounds
• 1 tablespoon olive oil
• 1 teaspoon kosher salt
• 4 sliced pepper jack cheese
• 2 cups chopped greens arugula, spinach, romaine, etc.
• 4 sweet onion burger buns

Sauce Ingredients

• ½ cup garlic hummus
• ½ cup ketchup

Instructions 

• Add all of the marinade ingredients to a large bowl and whisk to combine.

• Dredge the mushrooms in the marinade a few times to coat them. Let the mushrooms marinate for 1 hour, flipping them halfway through.

• Preheat the grill to 400ºF and clean the grates.

• Place the onion rounds on a plate and drizzle them with olive oil and season them with salt and pepper.

• When the grill is heated, transfer onions to the grill over indirect heat. Grill the onions for 10 minutes, flipping halfway.

• Then, transfer the mushrooms cap side down on the grill over indirect heat. Grill the mushrooms for 3 minutes on the cap side, flip, and grill them for an additional 2 minutes.

• Place a slice of cheese on the mushroom and close the grill for 1 minute, allowing the cheese to melt. Remove them from the grill.

• While the mushrooms are cooking, combine the hummus and the ketchup in a bowl.

• Assemble the burgers. Place the bottom of the burger bun on a plate, and transfer ½ cup of the greens onto the bun. Top the greens with the mushroom patty, and top the patty with grilled onion rounds.

• Lastly, slather the top bun with 2-3 tablespoons of the hummus sauce to finish the burger. Serve immediately.

Tips & Notes

• Be sure to find large portobello mushrooms.
• You can use your favorite burger fixings in place of our burger fixings.

Nutrition facts

Calories: 382kcal Carbohydrates: 45g Protein: 10g Fat: 19g Fiber: 5g Sugar: 16g