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Grilled Portobello Tacos Recipe

4.5 from 94 reviews

These Grilled Portobello Tacos are a vibrant and flavorful vegetarian dish featuring marinated and grilled portobello mushrooms, crisp cabbage slaw, fresh avocado slices, and tangy cotija cheese, all wrapped in warm corn tortillas. Perfect for a light yet satisfying meal that bursts with smoky, spicy, and fresh flavors.

Ingredients

Scale

Marinade and Mushrooms

  • 1/2 cup neutral oil, plus more for grill
  • 2 teaspoons chili powder
  • 2 teaspoons garlic powder
  • 1 teaspoon ground cumin
  • 3 teaspoons fresh lime juice, divided
  • 2 teaspoons kosher salt, divided
  • 4 large portobello mushrooms, cleaned, stemmed, gills removed, sliced 1/2 inch thick

Slaw

  • 2 cups thinly sliced Napa cabbage
  • 1/4 cup thinly sliced red onion
  • 2 tablespoons fresh cilantro, thinly sliced, plus more for serving

Assembly

  • 1 avocado, thinly sliced
  • 8 (5 to 6 inch) corn tortillas, warmed
  • Cotija cheese, for serving (optional)

Instructions

  1. Make the marinade: In a medium bowl, whisk together the neutral oil, chili powder, garlic powder, cumin, 1 tablespoon of lime juice, and 1 1/2 teaspoons of kosher salt until well combined.
  2. Marinate the mushrooms: Arrange the sliced portobello mushrooms in a single layer in a shallow glass baking dish. Pour the marinade over the mushrooms, gently turning the slices to coat them evenly. Set aside at room temperature for 30 minutes to absorb flavors.
  3. Prepare the cabbage slaw: In a medium bowl, toss the Napa cabbage, red onion, 2 tablespoons of cilantro, remaining 2 tablespoons of lime juice, and the remaining 1/2 teaspoon of salt. Mix well and set aside to let flavors meld.
  4. Preheat the grill: Heat a grill or grill pan over medium-high heat for about 5 minutes. Clean the grates thoroughly and brush lightly with oil to prevent sticking.
  5. Grill the mushrooms: Remove the marinated mushrooms from the marinade, allowing any excess to drip off. Place them on the hot grill in a single layer and cook for 1 to 2 minutes per side, turning once, until they are deeply marked and tender.
  6. Assemble the tacos: Warm the corn tortillas and then arrange 2 slices of avocado and a handful of the cabbage slaw in the center of each tortilla. Top with 3 to 4 grilled portobello mushroom slices. Garnish with extra cilantro and a sprinkle of cotija cheese if desired. Serve immediately.

Notes

  • Remove the gills from portobello mushrooms to reduce bitterness and improve texture.
  • Use a neutral oil like canola or vegetable oil for the marinade to avoid overpowering flavors.
  • If you don’t have a grill, a grill pan on the stovetop works well as an alternative.
  • For a vegan option, omit the cotija cheese or substitute with a plant-based cheese alternative.
  • Warm tortillas before assembling to prevent cracking and to enhance flavor.
  • Letting the mushrooms marinate at room temperature helps them absorb the marinade more effectively.

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