Description
The Best Grilled Portobello Mushroom Burger is a must-try for anyone seeking a delicious and hearty meal. This flavorful burger features succulent marinated portobello mushrooms grilled to perfection, topped with melted Swiss cheese, grilled red onions, fresh tomatoes, creamy avocado, and vibrant spinach. It’s an excellent option for both vegetarians and meat lovers alike, offering a satisfying bite that bursts with rich flavors. Perfect for summer cookouts or cozy lunches at home, this burger is versatile enough to customize with your favorite toppings. Quick to prepare in just 60 minutes, it’s a delightful and nutritious alternative to traditional beef burgers.
Ingredients
Scale
- 4 portobello mushroom caps
- 2 tbsp balsamic vinegar
- 1 tbsp low sodium soy sauce
- 1 tbsp olive oil
- 1 tbsp chopped rosemary
- 1.5 tsp steak seasoning
- 4 oz reduced fat Swiss cheese (sliced)
- 4 thick slices red onion
- 4 thin slices tomato
- 1/2 avocado (sliced)
- baby spinach
- 4 whole wheat low-calorie buns
Instructions
- In a mixing bowl, combine balsamic vinegar, soy sauce, olive oil, rosemary, and steak seasoning.
- Toss the portobello caps in the marinade and let them sit for 20–30 minutes.
- Preheat the grill over medium heat and brush the grate with oil.
- Grill the mushrooms for 5–7 minutes per side, basting with reserved marinade.
- In the last minute of grilling, add Swiss cheese on top of each mushroom.
- Grill red onion slices until charred; toast buns until golden brown.
- Assemble by placing spinach on the bun, adding grilled mushrooms topped with cheese, followed by onions, tomatoes, and avocado.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Category: Main
- Method: Grilling
- Cuisine: American
Nutrition
- Serving Size: 1 burger (approximately 200g)
- Calories: 360
- Sugar: 3g
- Sodium: 450mg
- Fat: 12g
- Saturated Fat: 4g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 45g
- Fiber: 8g
- Protein: 18g
- Cholesterol: 15mg