Easy to make, delicious Grilled Marinated Portobello Mushrooms with an easy, tasty marinade from pantry ingredients. Perfect as a vegetarian alternative to grilled burgers.
A meaty-textured portobello mushroom can be a great alternative to a hamburger. They can cook along with your burgers at the same time and grill at the same temperature. Serve them as a tasty portobello steak, grilled portobello mushroom burger, or side dish.
🍄Ingredients
Portobello mushrooms
Olive oil
Soy sauce—use Tamari if you want gluten-free
Lemon juice
Balsamic vinegar—optional
Seasoning—garlic powder, kosher salt, black pepper. Optional additions are cayenne pepper, rosemary, and fresh thyme.
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A portobello mushroom has about 20 calories, but that changes with the marinade—assuming 50% absorption of the marinade (which is high), they are still under 100 calories and fit that will fit a healthy diet like a low-calorie or low-fat diet or even a low-carb keto diet.
This grilled portobello mushroom recipe is from my local cooking school. I have expanded the discussion and provided detailed instructions with photos. Please enjoy this excellent alternative to have in your grilling bag of tricks.
👨🍳How to Make Grilled Portobello Mushrooms—Step-by-Step
1. Wash and pat dry the mushroom caps. Break off the stem, but leave the gills.
2. Mix marinade of 2 tablespoons olive oil, 1 tablespoon soy sauce, 1 teaspoon lemon juice, ½ teaspoon garlic powder, ½ teaspoon kosher salt, and ¼ teaspoon black pepper. Optional additions are cayenne pepper, rosemary, and fresh thyme.
3. Brush the top of the mushrooms with a generous amount of marinade. Flip over and brush the bottom. Pour any remainder into the bottom of the mushrooms. Cover and refrigerate for 1-2 hours.
4. Grill over direct high heat directly on the grill grates or in a grill pan. Start with the bottom side up. Grill for 4-5 minutes and flip for another 4-5 minutes.
5. Serve as a portobello steak, grilled portobello mushroom burger, or side dish.
For more details, keep reading. See the Recipe Card below for complete instructions and to print.
🥣Portobello Mushroom Marinade
The simple marinade is made with olive oil, soy sauce, lemon juice, balsamic vinegar (optional), and garlic, and it has a great taste with common pantry ingredients. Optional additions are cayenne pepper, rosemary, and fresh thyme.
Serving
Serve with Grilled Mixed Vegetables, Grilling Asparagus, Grilled Baby Red Potatoes, and Grilled Pineapple. It works well with Grilled Burger, Low Fat Burgers, Juicy Lucy Burgers, Ground Chicken Burgers, Meatloaf BurgerPatties, and Grilled Pork Tenderloin.
Storage of leftovers
Store leftover grilled portobello mushrooms in an airtight container refrigerated for 3 days—reheat in the oven or microwave.
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🍄About Portobello Mushrooms
A portobello mushroom is a mature form of the common button mushroom but is allowed to grow and mature. They are cultivated in many countries and are among the most common mushrooms.
The spelling has common variations, including portobello, portabella, and portobella. They are all the same, and all the spellings are acceptable.
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📖The Recipe Card with Step-by-Step Instructions
Grilled Marinated Portobello Mushrooms
Ingredients
- 2 large portobello mushrooms
- 2 tablespoons olive oil
- 1 tablespoon soy sauce
- 1 teaspoon lemon juice
- ½ teaspoon garlic powder
- ½ teaspoon kosher salt
- ¼ teaspoon black pepper
- 1 teaspoon balsamic vinegar - Optional
Step-by-Step Instructions
- Wash and pat dry the mushroom caps. Break off the stem, but leave the gills
- Mix marinade of 2 tablespoons olive oil, 1 tablespoon soy sauce, 1 teaspoon lemon juice, ½ teaspoon garlic powder, ½ teaspoon kosher salt, and ¼ teaspoon black pepper. Optional additions are cayenne pepper, rosemary, and fresh thyme.
- Brush the top of the mushrooms with a generous amount of marinade. Flip over and brush the bottom. Pour any remainder into the bottom of the mushrooms. Cover and refrigerate for 1-2 hours.
- Grill over direct high heat directly on the grill grates or in a grill pan. Start with the bottom side up. Grill for 4-5 minutes and flip for another 4-5 minutes.
- Serve as a portobello steak, grilled portobello mushroom burger, or side dish.
Recipe Notes
Pro Tips
- You need large relatively fresh portobello mushrooms for this recipe.
- I calculated the nutrition with one-half of the marinade staying in the final dish but it will vary by the dryness of the mushrooms. Commonly only one-tenth of a marinade is used to calculate this.
- The cooking timing matches grilled burgers perfectly and I use this for casual grill parties so the guests will have a choice.
- Cook to final color and not by time.
- Vary the marinade to your taste.
Your Own Private Notes
To adjust the recipe size:
You can adjust the number of servings above; however, only the amount in the ingredient list is adjusted, not the instructions.
Nutrition Estimate (may vary)
Editor's Note: Originally Published August 13, 2017. Updated with expanded options, refreshed photos, and a table of contents to help navigation.
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