Grilled Portobello Burgers for the 4th of July

Photo courtesy of
Photo courtesy of

The summer is here and the 4th of July is vast approaching. Summer BBQ’s can be an awkward time for a vegan, so to ease the stress of party goers and party throwers it may be best to come prepared with some recipes.

I found this grilled portobello burger recipe and it is definitely something I want to try for the 4th and future BBQs.

Grilling really brings out the juicy best in these portobellos, so I use the bare minimum of ingredients to let them really flaunt their flavor. A little (cheap!) chardonnay for depth of flavor, tamari for a bit of saltiness, baslamic for a touch of zest, and garlic for, well, it’s garlic! Choose firm, light colored mushrooms with fresh, healthy looking gills that spring back when you gently rub your finger across them. Don’t remove the gills, they are loaded with flavor and texture, not to mention they soak up garlic and marinade beautifully. Gently wash your caps before marinading and you are A-ok. Skip that anemic hamburger bun and go for a bready focaccia that can stand up to the portobello juices that are bound to make you lick your fingers.

Tip: Save your portobello stems for gravy or broth.

Grilled Portobello Burgers

  • Servings: 4
  • Difficulty: easy
  • Print


4 portobello mushrooms, stems removed

For the marinade:

  • 1/2 cup dry white wine
  • 2 tablespoons tamari or soy sauce
  • 2 tablespoons balsamic vinegar
  • 1 tablespoon olive oil
  • 4 cloves garlic, minced

For the sandwich:

  • 4 nice sized pieces foccacia bread
  • A few handfuls baby arugula
  • Slices of sweet onion (like walla walla or vidalia)
  • Slices of tomato
  • A little vegan mayo


  1. Place the portobellos gills up in a rimmed baking sheet.
  2. Mix all the marinade ingredients together and spoon over the portobellos. Let marinate for at least half an hour, spooning marinade back onto the mushrooms every ten minutes or so.
  3. Grease up your grill with olive oil and preheat over medium/high. It’s important to keep some oil nearby for brushing the grill through out the cooking process. You can use a grill brush for it, or a paper towel wadded up and grasped in your tongs. You can also use a spray bottle of oil.
  4. Place the mushrooms gill side up on the grill. Close lid and let mushrooms cook for about 5 minutes, lifting the lid to baste shrooms with marinade every few minutes. Use tongs to turn the mushrooms 90 degrees to make cross hatched grill marks; cook for about 3 more minutes. Flip mushrooms over and cook for about 3 more minutes. Your cooking time may vary depending on the size of your portobellos and the temperature of your grill. You know the mushrooms are done when you press on the center with tongs (where the stem used to be) and it’s very soft and juicy.
  5. Remove from heat and let rest for about 5 minutes. This lets the flavors develop a bit and the juices taste even yummier when they are just a little bit cooled down. You can use this time to slice your bread and prep the veggies.
  6. Assemble sandwiches and sink your teeth in.

Adapted From The PPK


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