Grilled Portobello Mushrooms

These easy grilled portobello mushrooms are juicy, smoky, and ready in 20 minutes: no marinating required! Toss them on the grill as a side dish or serve on a bun as a plant-based burger.

Grilled portobello mushrooms

Ready to up your grilling game? Try these incredible grilled portobello mushrooms! They’re juicy and bursting with big, meaty umami. My method for grilling them is fast and easy: unlike most recipes, there’s no marinading time required.

Just sprinkle with olive oil and balsamic vinegar, and pop them on the grill. I use this method all the time and it make for the most tender, juicy and irresistible mushroom caps. Here’s how to do it!

Why You’ll Love This Recipe

  • No marinating required. Just drizzle, season while you’re preheating, and grill: no planning ahead needed!
  • Cooks in 15 minutes. A quick and easy summer side.
  • Vegan and gluten-free. Works for nearly every guest at the table.

Ingredients You Need

Portobello mushrooms are what convinced me to stop hating this vegetable (or really, fungus). The meaty flavor you can get when you cook them is unreal! The grill is really the best cooking method for portobello mushrooms because it infuses that smoky flavor, too. All you’ll need is a few ingredients to get massive flavor:

  • Portobello mushroom caps: Look for large, firm caps without bruising or soft spots. The bigger the cap, the meatier the result.
  • Olive oil: Helps the mushrooms cook evenly and prevents sticking on the grill grates.
  • Balsamic vinegar: The flavor secret: it adds a tang and a hint of sweetness. If you love the flavor, you can also try finishing them with a drizzle of balsamic glaze.
  • Salt and pepper: Of course; to draw out the flavors even more.
Grilled portobello

How to Grill Portobello Mushrooms

Here’s my master technique for grilled portobello mushrooms! One thing to note is that they give off quite a bit of liquid as you grill them. That’s why it’s important to grill portobellos with the gill side up first. The liquid will pool in the cap, and then you can flip it to drain the liquid through the grates. Here’s how to do it (or jump to the recipe):

  • Preheat a grill to medium high heat: that’s 375 to 450 degrees.
  • Prep the mushrooms: Remove the stems and drizzle with olive oil, balsamic vinegar (quantities below).
  • Grill: Place on the grill gill side up, and 10 to 14 minutes, then flip and grill 2 to 3 minutes until juicy and browned.
Grilled portobello mushroom

Serving Them As a Portobello Burger

The nice thing about grilled portobello mushrooms: you can serve them as a side dish or as a main dish! Eat them on a bun and they become “portobello burgers.” But make sure to add a source of protein to the sandwich: like cheese! Or serve them with a hearty side filled with plant-based protein. Mushrooms don’t have much protein on their own, so they’re not as filling as a normal burger would be. Here are some ideas on how to serve them:

Another idea? Make Stuffed Portobello Mushrooms using grilled portobellos and spinach artichoke filling. Or try them as a Portobello Mushroom Pizza!

Portobello burger

Serving Suggestions As a Side Dish

Naturally, grilled portobello mushrooms are perfect as a side dish! Alex and I often grill up a whole tray of veggies including portobellos. Or here are some main dishes that become a meal with grilled mushrooms:

Let me know if you make these grilled portobello mushrooms: they’re one of our favorite treats to go with summer grilled meals.

Grilled portobello mushrooms

Storage Instructions

Grilled portobello mushrooms are best eaten fresh off the grill, but you can also store leftovers for up to 3 days refrigerated. Reheat them in a skillet over medium heat or in a 375°F oven. Leftovers work well in sandwiches, wraps, or layered into a grain bowl.

Dietary Notes

This grilled portobello mushrooms recipe is vegetarian, vegan, plant-based, dairy-free, and gluten-free.

Frequently Asked Questions

Do I need to marinate portobello mushrooms before grilling?

Nope! Olive oil and balsamic vinegar applied while the grill is preheating bring big flavor without any wait time.

Should I remove the gills before grilling?

You don’t have to. The gills are edible and actually help hold the olive oil and balsamic in place during grilling. If you prefer to remove them for visual reasons, use a spoon to scrape them out gently before seasoning.

Can I make these without a grill?

Yes. Roast them in a 450°F oven on a baking sheet for about 15 minutes until tender. See my Stuffed Portobello Mushrooms recipe. Drain off any excess liquid before serving.

What can I make with leftover grilled portobello mushrooms?

Slice them and toss into pasta, as a pizza topping, added to a grain bowl, or layered in a quesadilla. You can also use them for a Portobello Mushroom Pizza. Check out my roundup of Best Portobello Mushroom Recipes for more.

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Easy Grilled Portobello Mushrooms

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These easy grilled portobello mushrooms are juicy, smoky, and ready in 20 minutes: no marinating required! Toss them on the grill as a side dish or serve on a bun as a plant-based burger.

  • Author: Sonja Overhiser
  • Prep Time: 5 minutes
  • Cook Time: 15 minutes
  • Total Time: 20 minutes
  • Yield: 4 1x
  • Category: Side Dish
  • Method: Grilled
  • Cuisine: Vegetables
  • Diet: Vegan

Ingredients

  • 4 portobello mushrooms
  • 2 to 3 tablespoons olive oil
  • 1 to 2 tablespoons balsamic vinegar
  • ½ teaspoon kosher salt
  • Fresh ground black pepper

Instructions

  1. Preheat a grill to medium-high heat (375 to 450 degrees Fahrenheit).
  2. Clean the portobello mushrooms and remove the stems. Drizzle the gill sides with the olive oil and use your hands to rub all over the mushrooms, including the bottoms. Then drizzle the gill sides with balsamic vinegar, sprinkle with kosher salt, and add several grinds of black pepper.
  3. Place the mushrooms directly on the grill grates gill side up and grill 10 to 14 minutes until tender and juicy. Liquid will pool in the cap. Flip the mushrooms (this drains the liquid into the grates) and cook for an additional 2 to 3 minutes until browned.

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