Grilled Marinated Portobello Mushrooms

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 in the same time and grill temperature. Serve them as a tasty portobello steak, grilled portobello mushroom burger, or side dish.

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.

Serve with Grilled Mixed Vegetables, Grilled Asparagus, Grilled Baby Potatoes, and Grilled Pineapple. And works well with Grilled Burger, Low Fat Burgers, Juicy Lucy Burgers, Ground Chicken Burgers, and Grilled Pork Tenderloin.

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.

🍄About Portobello Mushrooms

A portobello mushroom is a mature form of the common button mushroom but allowed to grow and mature. They are cultivated in many countries and are one of 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.

❓FAQs

Storage of leftovers

Store leftover grilled portobello mushrooms in an airtight container refrigerated for 3 days. Reheat, in the oven or a microwave.

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Step-by-Step Photo 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

Grilled Marinated Portobello Mushrooms

From Dan Mikesell AKA DrDan

Easy to make, delicious Grilled Marinated Portobello Mushrooms with an easy, tasty marinade from pantry ingredients. Perfect as a vegetarian alternative to grilled burgers.

Tap to leave a Rating

3.86 from 7 votes

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Prep Time: 10 minutes minutes

Cook Time: 10 minutes minutes

Marinade: 1 hour hour

Total Time: 1 hour hour 20 minutes minutes

Servings #/Adjust if desired 2

Ingredients

US Customary - Convert to Metric

• ▢ 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

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Instructions

Photos ONOFF

• 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.
  

Some recipes have an option to display the photos here with a switch above these instructions but the photos DO NOT print. Otherwise step-by-step photos are in the post.

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Recipe Notes

Pro Tips

1. You need large relatively fresh portobello mushrooms for this recipe.
2. 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.
3. The cooking timing matches grilled burgers perfectly and I use this for casual grill parties so the guests will have a choice.
4. Cook to final color and not by time.
5. Vary the marinade to your taste.

To adjust the recipe size:

You may adjust the number of servings in this recipe card under servings. This does the math for the ingredients for you. BUT it does NOT adjust the text of the instructions. So you need to do that yourself.

Nutrition Estimate

Calories : 86.7 kcal (4%)Carbohydrates : 4.3 g (1%)Protein : 2.2 g (4%)Fat : 7.3 g (11%)Saturated Fat : 1 g (5%)Polyunsaturated Fat : 0.8 gMonounsaturated Fat : 5.1 gTrans Fat : 0.01 gSodium : 443.2 mg (18%)Potassium : 330.2 mg (9%)Fiber : 1.2 g (5%)Sugar : 2.5 g (3%)Vitamin A : 0.8 IUVitamin C : 0.5 mg (1%)Calcium : 5.6 mg (1%)Iron : 0.4 mg (2%)

Serving size is my estimate of a normal size unless stated otherwise. The number of servings per recipe is stated above. This is home cooking, and there are many variables. All nutritional information are estimates and may vary from your actual results. To taste ingredients such as salt will be my estimate of the average used.

Course : Main Course

Cuisine : American

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Editor's Note: Originally Published August 13, 2017. Updated with expanded options, refreshed photos, and a table of contents to help navigation.