Description

These Marinated Portobello Mushroom Burgers are a delicious and flavorful vegetarian alternative to traditional burgers. Marinated in a savory blend of olive oil, soy sauce, apple cider vinegar, and spices, the mushrooms soak up rich flavors before being grilled to tender perfection. Served on fresh buns with optional classic toppings like mayonnaise, tomato, onion rings, and spring mix, this recipe makes for a satisfying and easy-to-make meal.

Ingredients

Scale

Marinade

2 Tbsp olive oil
2 Tbsp soy sauce
1 Tbsp apple cider vinegar
1 tsp brown sugar
1/4 tsp oregano
1/4 tsp garlic powder
1/4 tsp onion powder
1 tsp smoked paprika
freshly cracked pepper (about 10 cranks of a pepper mill)

Mushrooms and Buns

2 portobello mushroom caps (about 1/2 lb. total)
2 buns

Optional Toppings

1 cup spring mix
1 tomato
1/4 red onion, sliced into rings
4 Tbsp mayonnaise

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Instructions

Prepare the Marinade: In a small bowl, combine olive oil, soy sauce, apple cider vinegar, brown sugar, oregano, garlic powder, onion powder, smoked paprika, and freshly cracked pepper. Stir well until the sugar is dissolved and the ingredients are fully incorporated.
Marinate the Mushrooms: Remove the stems from the portobello mushrooms. Place the mushrooms gill side up in a shallow dish. Pour some marinade into the gills, flip the mushrooms, and pour the remaining marinade over the top. Let them marinate for 30 minutes, flipping occasionally to ensure even flavor absorption.
Grill the Mushrooms: Heat a grill or grill pan over medium to medium-high heat. Once hot, place the marinated mushrooms on the grill. Cook for about 7 minutes per side, or until the mushrooms are tender and most of their liquid has released.
Assemble the Burgers: Place the grilled portobello mushrooms on buns and add your favorite toppings. Classic choices include mayonnaise, sliced tomato, red onion rings, and spring mix or lettuce.

Notes

You can save the mushroom stems and chop them to use later in omelettes or other dishes.
Save leftover stems and vegetable scraps in the freezer to make homemade vegetable stock.
For a vegan option, substitute mayonnaise with vegan mayonnaise or a spread of your choice.
Ensure mushrooms are cleaned gently with a damp cloth instead of rinsing under water to avoid sogginess.
Allowing mushrooms to marinate longer (up to 1 hour) can enhance flavor further.

Nutrition

Serving Size: 1 burger
Calories: 350 kcal
Sugar: 4 g
Sodium: 550 mg
Fat: 15 g
Saturated Fat: 2 g
Unsaturated Fat: 13 g
Trans Fat: 0 g
Carbohydrates: 40 g
Fiber: 4 g
Protein: 7 g
Cholesterol: 10 mg