Savory Balsamic Grilled Portobello Mushroom Burgers
These balsamic grilled portobello mushroom burgers are juicy, tender, and packed with savory, tangy, and slightly sweet flavors. Perfect for a quick, satisfying veggie lunch that even meat lovers will enjoy.
- Prep Time: 15 minutes
- Cook Time: 10 minutes
- Total Time: 25 minutes
- Yield: 4 servings 1x
- Category: Main Course
- Cuisine: American
Ingredients
- 4 large portobello mushroom caps, cleaned and stems removed
- 1/4 cup balsamic vinegar
- 1/4 cup extra virgin olive oil
- 3 cloves garlic, minced
- 1 tablespoon Dijon mustard
- 1 teaspoon maple syrup or honey (optional)
- 1 teaspoon fresh thyme or rosemary, chopped
- Salt and pepper to taste
- 4 burger buns, toasted (brioche, whole wheat, or gluten-free)
- Optional toppings: sliced avocado, fresh arugula, tomato slices, vegan or regular cheese, caramelized onions
Instructions
- Make the marinade by whisking together balsamic vinegar, olive oil, minced garlic, Dijon mustard, maple syrup or honey, chopped fresh thyme, salt, and pepper in a mixing bowl.
- Clean the portobello mushroom caps gently with a damp cloth or paper towel. Remove stems and scrape out gills if desired.
- Place mushroom caps in a shallow dish, gill side up, and brush both sides generously with the marinade. Let sit for at least 15 minutes at room temperature or up to 1 hour in the refrigerator, turning once halfway through.
- Preheat grill or grill pan to medium-high heat (350-400°F). Lightly oil the grates to prevent sticking.
- Grill mushrooms, gill side down first, for 4-5 minutes per side, brushing occasionally with leftover marinade. Look for crispy edges and caramelized spots without overcooking.
- While mushrooms grill, split and toast burger buns lightly on the grill or in a toaster.
- Assemble burgers by layering grilled portobello caps on buns and adding desired toppings such as arugula, tomato, avocado, or cheese. Optionally add garlic aioli or pesto.
Notes
Brush marinade on mushrooms instead of soaking to avoid sogginess. Maintain medium-high grill heat to achieve caramelization without drying out mushrooms. Flip gently with tongs to prevent tearing. Let mushrooms rest briefly off heat before serving. Marinate at least 15 minutes for flavor; up to 1 hour refrigerated is best. For vegan version, skip honey and use vegan buns and cheese.
Nutrition
- Serving Size: 1 burger
- Calories: 220280
- Sugar: 3
- Sodium: 300
- Fat: 15
- Saturated Fat: 2
- Carbohydrates: 1822
- Fiber: 35
- Protein: 68
Keywords: portobello mushroom burger, balsamic mushroom burger, grilled veggie burger, vegetarian burger, vegan burger option, easy lunch recipe, healthy burger