Balsamic Marinated Portobello Burgers Recipe

These juicy, salty, and tangy mushroom burgers are perfect for your next cookout.

By
Joshua Bousel
a photo of Joshua Bousel, a Contributing Writer at Serious Eats
Joshua Bousel is a Serious Eats old-timer, having started sharing his passion for grilling and barbecue recipes on the site back in 2008. He continues to develop grilling and barbecue recipes on his own site, The Meatwave, out of his home base of Durham, North Carolina.
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Updated May 24, 2024
Side view of a Balsamic Marinated Portobello Burger, served in a bun with lettuce, tomato, and red onion.

Serious Eats / Joshua Bousel

Why It Works

  • Marinating the mushroom caps for 30 minutes is all that's needed to infuse them with flavor.
  • An assertive, acidic marinade made with balsamic vinegar, Dijon mustard, and garlic accentuates the meaty flavor of the mushrooms.

I'm a self-described "meatmaster," and in this role, I pay fairly little attention to the needs of my vegetarian friends. So I'm not entirely sure what compelled me, but I decided to throw six portobellos in the mix alongside my eight pounds of glorious home-ground fatty chuck.

With these gigantic shrooms in the house, I decided to give them a little more attention than the simple oil, salt, and pepper treatment. The portobellos sat in a quick balsamic marinade for thirty minutes before being grilled.

Finally, I understood why some people claim portobellos are "meaty"—the juicy, salty, and tangy mushrooms had a heft that was undoubtedly filling like a beef burger. While the day ended in my favor—with zero pounds of beef left but still with two portobellos remaining—I was happy to please every guest with the attention I normally reserve for my more meaty pursuits.

September 2012

Recipe Details

Balsamic Marinated Portobello Burgers Recipe

Prep 5 mins
Cook 35 mins
Active 20 mins
Marinating Time 30 mins
Total 70 mins
Serves 4 servings

Ingredients

  • 1/4 cup balsamic vinegar

  • 1/4 cup olive oil

  • 2 tablespoons juice from 1 lemon

  • 1 tablespoon Dijon mustard

  • 3 medium cloves garlic, minced (about 1 tablespoon)

  • 1 teaspoon finely minced thyme leaves

  • 1 teaspoon kosher salt

  • 4 portobello mushrooms, stems removed and scrubbed clean

  • 4 hamburger buns

  • 4 pieces of green or red leaf lettuce, washed and dried

  • 1 roma tomato, sliced

  • 1 red onion, thinly sliced

Directions

  1. In a small bowl, whisk together balsamic vinegar, olive oil, lemon juice, mustard, garlic, thyme, and salt.

    The marinade is whisked together in a bowl.

    Serious Eats / Joshua Bousel

  2. Place portobellos in a large resealable plastic bag. Pour in marinade, seal bag, and toss to coat mushrooms thoroughly. Let marinate at room temperature for 30 minutes.

    Closeup of the mushroom caps coated in marinade, nestled in a ziptop bag.

    Serious Eats / Joshua Bousel

  3. Light one chimney full of charcoal. When all charcoal is lit and covered with gray ash, pour out and spread the coals evenly over entire surface of coal grate. Set grill grate in place, cover grill and allow to preheat for 5 minutes. Clean and oil the grill grate. Grill mushrooms until juicy and tender, 3 to 4 minutes per side.

    Closeup of the mushrooms cooking on the grill and lightly charring.

    Serious Eats / Joshua Bousel

  4. Transfer portobellos to buns. Top with lettuce, tomato, and onion and serve.

    Side view of the finished burger, ready to serve.

    Serious Eats / Joshua Bousel

Special Equipment

Grill, chimney starter, whisk

Read More

Nutrition Facts (per serving)
338Calories
16gFat
40gCarbs
9gProtein
×
Nutrition Facts
Servings: 4
Amount per serving
Calories338
% Daily Value*
Total Fat 16g21%
Saturated Fat 3g13%
Cholesterol 0mg0%
Sodium 723mg31%
Total Carbohydrate 40g15%
Dietary Fiber 4g14%
Total Sugars 10g
Protein 9g
Vitamin C 12mg61%
Calcium 134mg10%
Iron 3mg16%
Potassium 512mg11%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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