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Grilled Portobello Mushrooms Recipe: A Delicious and Easy Summer Treat

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Grilled Portobello Mushrooms Recipe

If you’re looking for a delicious and easy way to enjoy a barbecue, grilled portobello mushrooms are the way to go. These mushrooms are perfect for any meal, offering a rich, meaty flavor without the meat.

You’ll love how simple it is to prepare and cook them. Just remove the stems, marinate the caps, and grill until they’re caramelized and juicy. Grilled portobello mushrooms make an excellent main dish or a hearty side.

Exact Ingredients (+ Possible Substitutes)

For grilled portobello mushrooms, you’ll need:


  • Portobello mushrooms: Choose large, firm mushrooms.
  • Olive oil: Helps in grilling. You can use vegetable oil or coconut oil as substitutes.
  • Balsamic vinegar: Adds a rich flavor. Red wine vinegar or apple cider vinegar can work too.
  • Garlic: Freshly minced. Garlic powder can be used if you don’t have fresh garlic.
  • Salt: Enhances taste. Sea salt or kosher salt are good options.
  • Black pepper: Freshly ground is best.
  • Soy sauce: Adds umami. You can use tamari for a gluten-free option.
  • Fresh herbs: Such as basil or parsley. Dried herbs can be used in lesser amounts if fresh herbs aren’t available.

Optional Toppings

  • Cheese: Think feta, goat cheese, or Parmesan.
  • Tomato slices: Fresh and juicy, adding a burst of flavor.
  • Bell peppers: Grilled and sliced, offer a sweet crunch.
  • Avocado: Creamy and rich, complements the mushrooms well.

Mix and match these ingredients and substitutes according to your preference or what’s available in your kitchen. This flexibility makes grilled portobello mushrooms a versatile and enjoyable dish.


  1. Preheat your grill to medium-high heat (about 375 to 450 degrees F).

  2. Clean your portobello mushrooms thoroughly. Remove the stems and use a damp cloth to wipe off any dirt.

  3. Marinate the mushrooms:

    • In a bowl, mix together olive oil, balsamic vinegar, minced garlic, and chopped onions.
    • Place the mushrooms in the bowl and let them marinate at room temperature for about 30 minutes.
  4. Prepare the grill:

    • Brush the grill grates with oil to prevent sticking.
    • You can use a paper towel dipped in vegetable oil.
  5. Grill the mushrooms:

    • Place the mushrooms stem-side up on the grill.
    • Grill for 4-5 minutes on each side. They should be tender and lightly charred.
  6. Basting:

    • Use the leftover marinade to baste the mushrooms while grilling.
    • This helps to keep them moist and adds more flavor.

  7. Serve warm: Transfer the mushrooms to a platter and serve them hot. Add some fresh basil or other herbs if you like.

Tips, Tricks & Storing

Tips & Tricks

  • Choose Fresh Mushrooms: Look for portobello mushrooms that are firm and have a smooth surface. Avoid any that are slimy or wrinkled.
  • Marinating: Marinate the mushrooms for at least 30 minutes to enhance flavor. Use olive oil, balsamic vinegar, and your favorite herbs.
  • Grill Prep: Preheat your grill to medium-high heat (about 375 to 450°F). Brush the grill grates with oil to prevent sticking.
  • Cooking Time: Grill the mushrooms for 4-5 minutes on each side until tender and lightly charred.


  • Refrigeration: If you have leftover grilled mushrooms, store them in an airtight container in the refrigerator. They will stay fresh for up to 4 days.
  • Freezing: You can freeze grilled portobello mushrooms. Place them in a single layer on a baking sheet to freeze individually, then transfer to a freezer-safe bag. They can be kept for up to 2 months.


  • Microwave: Place mushrooms on a microwave-safe dish and heat for 1-2 minutes.
  • Oven: Preheat the oven to 350°F, place mushrooms on a baking sheet, and heat for about 10 minutes.
  • Stovetop: Use a skillet over medium heat and warm the mushrooms for 3-4 minutes until heated through.

Recipe Variations & Serving Suggestions

Recipe Variations

  1. Stuffed Portobello Mushrooms: Fill the mushrooms with goat cheese, spinach, and sun-dried tomatoes before grilling.
  2. Garlic Butter: Brush with garlic butter instead of marinade for a rich flavor.
  3. Asian-Inspired: Use soy sauce, ginger, and sesame oil for a tasty twist.
  4. Italian Style: Top with marinara sauce and mozzarella cheese after grilling.

Serving Suggestions

  • Burger Substitute: Use grilled portobello mushrooms as a delicious veggie burger patty.
  • Salad Topping: Slice and add to your favorite salad for extra flavor and texture.
  • Side Dish: Serve alongside grilled meats or fish for a tasty side.
  • Tacos: Chop and use as a filling for vegetarian tacos with salsa and avocado.


  • Toppings: Add fresh herbs like basil or parsley.
  • Dips: Serve with hummus or a tangy yogurt dip.
  • Breads: Pair with crusty bread or garlic bread.

These ideas will spice up your grilled portobello mushrooms and provide a variety of delicious ways to enjoy them.

Benjamin Happy Muncher

Hi, I'm Benjamin. I love cooking, long walks, and my girlfriend! Here you’ll find simple and delicious recipes that you can make in 30 minutes or less.