The Best Grilled Portobello Mushroom Burger
User Reviews
5
The Best Grilled Portobello Mushroom Burger
Description
This burger starts by marinating portobello mushroom caps in a mixture of balsamic vinegar, soy sauce, olive oil, chopped rosemary, and steak seasoning. This blend tenderizes the mushrooms while imparting a flavorful savory and herbaceous note. The caps are grilled over medium heat, basted frequently with the marinade, until they are tender and cooked through.
Swiss cheese slices are added near the end of grilling to melt gently over the mushrooms. Red onion slices and whole wheat buns are also grilled briefly to add caramelized flavor and warmth. The burger is assembled by placing baby spinach as a fresh green layer, then the grilled mushrooms with melted cheese, topped with grilled onions, sliced tomato, and thin avocado slices inside toasted buns.
The contrast of juicy, marinated mushrooms with creamy avocado, sweet grilled onions, and crisp baby spinach creates a hearty and satisfying vegetarian burger. The textures range from tender and juicy to crunchy and fresh, with savory, tangy, and slightly sweet flavor notes. This makes the burger suitable for those seeking a flavorful meatless alternative that still delivers complex taste and filling satisfaction.
Ingredients
- 4 portobello mushroom caps
- 2 tbsp balsamic vinegar
- 1 tbsp soy sauce low sodium
- 1 tablespoons olive oil
- 1 tbsp rosemary chopped
- 1-1/2 tsp steak seasoning like Montreal Steak Grill Mates
- 4 red onion thick slices
- 4 oz swiss cheese sliced thin, reduced fat
- 4 tomato thin slices
- 1/2 avocado (sliced thin)
- baby spinach
- 4 whole wheat buns I used Martin, low calorie
Instructions
- In a large bowl, whisk together vinegar, soy sauce, oil, rosemary, and Montreal steak seasoning.
- Place the mushroom caps in the bowl and toss with sauce, using a spoon to evenly coat. Let stand at room temperature for 20 to 30 minutes, turning a few times.
- Heat the grill or indoor grill pan over medium heat. When hot, brush the grate with oil or lightly spray the grill pan.
- Place the mushrooms on the grill, reserving marinade for basting. Grill for 5 to 7 minutes on each side, or until tender, brushing with marinade frequently.
- Top the mushrooms with cheese during the last minute of cooking.
- While the mushrooms cook, grill the onions about 1 minute on each side and grill the buns until toasted.
- To finish, place the spinach and grilled portobello mushrooms on the buns and top with the grilled onions, sliced tomato and avocado.
Nutrition Information
Show DetailsNutrition Facts
Serving: 4servings
Amount Per Serving
Calories 295 kcal
% Daily Value*
| Serving | 1loaded burger | |
| Calories | 295kcal | 15% |
| Carbohydrates | 31g | 10% |
| Protein | 21g | 42% |
| Fat | 13g | 20% |
| Saturated Fat | 1g | 5% |
| Sodium | 594mg | 25% |
| Fiber | 11g | 44% |
| Sugar | 6g | 12% |
* Percent Daily Values are based on a 2,000 calorie diet.
User Reviews
Overall Rating
5
You'll Also Love
