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5 from 1 vote

KISS Portabella Mushroom Sheet Pan Fajitas

Prep Time10 mins
Cook Time20 mins
Total Time30 mins
Servings: 6


  • 2 packages Monterey Mushrooms Fajita Time! Sliced Portabellas
  • 1 onion
  • 3 bell peppers (red, yellow, and orange)
  • 2 Tbsp avocado oil
  • Tortillas of choice (I like Siete!)
  • Toppings of choice: salsa, guacamole, cilantro


  • Preheat oven to 400°F and spray nonstick cooking spray on sheet pan (I use avocado oil cooking spray).
  • Slice the onion and bell peppers into thin strips and arrange on sheet pan, leaving room for portabella mushroom slices.
  • Arrange the portabella mushrooms on the sheet pan.
  • Drizzle the portabella mushrooms, bell peppers and onion with avocado oil and season the entire sheet pan with the 2 Fajita Time! seasoning packets included with the mushrooms. Mix to coat all of the veggies.
  • Cook for 20 minutes, turning veggies at the 10 minute mark so they cook evenly.
  • Remove sheet pan from oven after 20 minutes and serve on tortillas with your toppings of choice. Enjoy!