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  3. Grilled Portobello Burgers
Grilled portobello burger on a bun with toppings

Meaty portobello caps as the ultimate veggie burger

Grilled Portobello Burgers

Grilled Portobello Burgers

25 minEasy

Prep Time

15 min

Cook Time

10 min

Total Time

25 min

Servings

4

4 burgers

Difficulty

Easy

Cost

Budget

$

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Grilled Portobello Burgers

Meaty portobello caps as the ultimate veggie burger

Thick portobello mushroom caps marinated and grilled until juicy and meaty, served on toasted buns with all the fixings. Even meat lovers will be impressed.

15m

Prep Time

10m

Cook Time

25m

Total Time

4

Servings

Easy

Difficulty

Budget $

Cost

Main CourseVegetarian
Sarah Chen
Sarah Chen

February 19, 2023(Updated April 13, 2026)

Portobello mushrooms have a dense, meaty texture that makes them a natural stand-in for burger patties. A quick marinade adds savory depth that rivals any beef burger.

Why This Recipe Works

Portobellos are naturally rich in umami compounds that create a deeply savory flavor when grilled. Their broad, flat shape fits perfectly on a burger bun right off the grill.

Ingredients

  • 4 large portobello mushroom caps, stems and gills removed
  • 3 tbsp balsamic vinegar
  • 2 tbsp olive oil
  • 4 slices provolone cheese
  • 4 brioche burger buns
  • Lettuce, tomato, onion, and avocado for topping

Instructions

  1. 1

    Scrape out the gills from the mushroom caps with a spoon. Whisk balsamic and olive oil, then brush over caps.

  2. 2

    Let mushrooms marinate gill-side up for 10 minutes so they absorb the dressing.

  3. 3

    Preheat grill to medium-high. Grill caps gill-side up for 4-5 minutes.

  4. 4

    Flip, top with provolone, and grill 3-4 more minutes until cheese melts and caps are tender.

  5. 5

    Toast buns on the grill, then assemble burgers with lettuce, tomato, onion, and avocado.

Serving Suggestions

Ways to Serve This Dish

  • Serve with a fresh side salad for a balanced meal

  • Pair with your favorite grain or bread on the side

  • Garnish with fresh herbs for a beautiful presentation

Substitutions

ProvoloneSwiss or smoked gouda

Both melt well and complement the earthy mushroom

Balsamic vinegarSoy sauce + olive oil

Adds umami depth instead of sweetness

DepthPantry

Test Kitchen Pick

Soy Sauce

Helpful Pantry Staple

Why the soy sauce matters

This is doing more than adding salt. The right soy sauce gives the recipe a rounder, more savory base than a thin generic bottle.

This pantry choice affects depth more than most seasonings here.

  • Builds savory backbone quickly
  • Useful across stir-fries, marinades, and dipping sauces

A better soy sauce is one of the easiest pantry upgrades for Asian cooking.

Shop soy sauce for this recipe

Tips & Storage

Pro Tips

  • Remove the gills—they hold excess moisture and can make the burger soggy.

  • Do not press the mushrooms while grilling or you will squeeze out all the flavorful juices.

Storage

Refrigerate grilled caps for up to 3 days.

Reheating

Reheat in a skillet or on the grill for 3-4 minutes.

Nutrition Facts

Per serving (25mg) · 4 servings

Calories340
LowModerateHigh

A moderate-calorie serving · based on a 2,000 cal daily diet

Protein14g
Carbohydrates18g
Fat32g
Fiber480mg
Sugar4g
Sodium6g

Nutritional values are approximate and may vary based on specific ingredients and preparation methods.

Frequently Asked Questions

Why remove the gills?
The dark gills hold excess water and can give a muddy appearance and soggy texture.
Can I use other mushrooms?
Portobellos are best for size, but large shiitakes work for sliders.

Explore More

More Main CourseVegetarian RecipesGrill Recipes
Sarah Chen

About Sarah Chen

Sarah Chen is a professional recipe developer and food editor with over a decade of experience in test kitchens and food media. She trained at the Culinary Institute of America before spending six years developing and testing recipes for national food publications, where she honed her ability to translate restaurant techniques into approachable home cooking. At RecipePool, Sarah leads recipe development, ensuring every dish is tested at least three times for clarity, accuracy, and genuine deliciousness. When she is not in the kitchen, she is browsing farmers markets and collecting vintage cookbooks.

View all recipes →

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