Vegetarian Mushroom Swiss Hamburger

Juicy, flavorful, and completely plant-based, the Vegetarian Mushroom Swiss Hamburger is a gourmet take on meat-free dining. Featuring tender, marinated Portobello mushroom caps grilled to perfection, this recipe combines the earthy richness of mushrooms with the melt-in-your-mouth creaminess of Swiss cheese. The marinade—made with olive oil, balsamic vinegar, soy sauce, and garlic—infuses the mushrooms with bold, savory notes, while crisp lettuce, fresh tomato, and tangy red onion add refreshing crunch. Layered onto lightly toasted whole-grain buns and finished with a touch of Dijon mustard and creamy mayonnaise, this burger is a satisfying, hearty alternative to its meaty counterpart. Perfect for vegetarians and burger enthusiasts alike, this easy-to-make recipe is ready in just 30 minutes, making it a delicious and healthy option for weeknight dinners or weekend barbecues.

Nutriscore Rating: 71/100

Prep Time:15 mins

Cook Time:15 mins

Total Time:30 mins

Servings: 4

Ingredients

• 4 large caps Portobello mushrooms
• 2 tablespoons Olive oil
• 2 tablespoons Balsamic vinegar
• 1 tablespoon Soy sauce
• 2 cloves, minced Garlic
• 0.5 teaspoon Salt
• 0.5 teaspoon Black pepper
• 4 slices Swiss cheese
• 4 Whole-grain hamburger buns
• 4 leaves Lettuce
• 1 large, sliced Tomato
• 1 small, sliced Red onion
• 4 tablespoons Mayonnaise
• 4 teaspoons Dijon mustard

Directions

Step 1

Start by cleaning the portobello mushrooms gently with a damp cloth to remove any dirt. Remove the stems but leave the gills intact.

Step 2

In a shallow dish, mix the olive oil, balsamic vinegar, soy sauce, minced garlic, salt, and pepper to create the marinade.

Step 3

Place the mushroom caps in the marinade, ensuring they are fully coated. Let them marinate for at least 10 minutes, occasionally flipping them to absorb the flavors.

Step 4

Preheat a grill or skillet over medium heat.

Step 5

Place the marinated mushroom caps on the grill or skillet, cooking for about 5 minutes on each side or until they are tender and juicy.

Step 6

During the last minute of cooking, place a slice of Swiss cheese on each mushroom cap and cover with a lid or foil to allow the cheese to melt.

Step 7

While the mushrooms are cooking, toast the hamburger buns lightly on the grill or in a toaster.

Step 8

Spread a tablespoon of mayonnaise and a teaspoon of Dijon mustard on each half of the toasted buns.

Step 9

Assemble the burgers by placing a cheese-covered mushroom on the bottom half of each bun. Top with a lettuce leaf, a slice of tomato, and a few rings of red onion.

Step 10

Finish by adding the top bun, press lightly, and serve immediately while warm.

Nutrition Facts

Serving size	(1355.4g)

Amount per serving	% Daily Value*
Calories	2041.1

Total Fat 97.1g	0%
Saturated Fat 14.4g	0%
Polyunsaturated Fat 3.0g
Cholesterol 99.2mg	0%
Sodium 5788.2mg	0%
Total Carbohydrate 225.5g	0%
Dietary Fiber 31.0g	0%
Total Sugars 53.2g
Protein 85.1g	0%

Vitamin D 5.9IU	0%
Calcium 1578.5mg	0%
Iron 12.4mg	0%
Potassium 3308.6mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 41.3%

Protein: 16.1%

Carbs: 42.6%