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Portobello Mushroom Steaks Recipe

Posted on 10/25/2023

in Recipes & Menu Inspiration

by Green Paper Products

grilled portobello mushrooms on a board

Portobello Mushroom Steaks

Indulge in the savory goodness of our Marinated and Grilled Portobello Mushroom Steaks, where meaty portobello mushroom caps take center stage as a hearty and flavorful vegetarian main course. Infused with a tantalizing blend of balsamic vinegar, olive oil, garlic, and thyme, these marinated mushroom steaks offer a satisfyingly robust umami flavor and a tender, juicy texture. Grilled to perfection, they boast enticing grill marks and a smoky aroma that will entice your senses. Whether you're a devoted vegetarian or simply seeking a meatless marvel, this dish promises a delightful and satisfying dining experience that's sure to impress.


For the Marinade:

  • 4 large portobello mushroom caps, cleaned and the stems removed

  • 1/4 cup balsamic vinegar

  • 2 tablespoons olive oil

  • 2 cloves garlic, minced

  • 1 teaspoon dried thyme

  • Salt and black pepper to taste

For Serving:

  • Fresh herbs (such as parsley or chives) for garnish (optional)

  • Balsamic reduction (optional, for drizzling)


1. Prepare the Marinade:

  • In a small bowl, whisk together the balsamic vinegar, olive oil, minced garlic, dried thyme, salt, and black pepper.

2. Marinate the Portobello Mushrooms:

  • Place the cleaned and stemmed portobello mushroom caps in a shallow dish or a resealable plastic bag.

  • Pour the marinade over the mushrooms, ensuring they are well coated. Allow them to marinate for at least 30 minutes or refrigerate for up to 4 hours, flipping the mushrooms occasionally to distribute the marinade evenly.

3. Preheat the Grill:

  • Preheat your grill to medium-high heat.

4. Grill the Portobello Mushroom Steaks:

  • Remove the marinated mushroom caps from the dish or bag and place them directly on the preheated grill grates.

  • Grill for about 4-5 minutes on each side, or until the mushrooms are tender and have grill marks.

5. Serve:

  • Transfer the grilled portobello mushroom steaks to a serving platter.

  • Garnish with fresh herbs (if desired) and drizzle with balsamic reduction for extra flavor.

6. Enjoy:

  • Serve the marinated and grilled portobello mushroom steaks as a vegetarian main course alongside your favorite side dishes.

These Marinated and Grilled Portobello Mushroom Steaks offer a meaty texture and robust umami flavor that make them a perfect choice for a vegetarian main course. Enjoy them as a delicious and satisfying meal!

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