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This is a great dinner to prep in advance when you’re planning to entertain–you can get your veggies ready to go and make the sauce a day ahead of time. Then, when it comes time for dinner, all you need to do is add your ingredients to a sheet pan and turn on the oven! Serve with fresh guacamole, Spicy Tomato Salsa, and a handful of cassava flour chips for a festive meal.

Sheet Pan Fajita Recipe

Serves 4 to 6

What You Need:

portobello mushrooms | Gundry MD

  • 1/4 cup extra-virgin olive oil plus extra for greasing baking sheet
  • 1 pound thinly-sliced tempeh, flank steak, wild caught shrimp, or Quorn crumbles
  • 2 red onions, thinly sliced
  • 3 portobello mushroom caps, thinly sliced
  • 3 cups broccoli florets
  • Stems from 1 bunch rainbow chard, sliced (save the leaves for something else, or use them as wraps for your fajitas)
  • 1 small bunch (8-10 sprigs) cilantro
  • 2 cloves garlic
  • 1 lime, quartered
  • 1 1/2 teaspoons cumin
  • 1 1/2 teaspoons sea salt
  • 1 teaspoon smoked paprika
  • Cassava tortillas (Siete brand), for serving
  • Spicy Tomato Salsa, for serving
  • Guacamole or avocado slices, for serving
  • Grated goat’s milk cheddar, for serving


guacamole | Gundry MD

  1. Preheat the oven to 425°F. Lightly grease a rimmed baking sheet with oil, and set aside.
  2. In a large bowl, add the protein, onions, mushrooms, broccoli, and rainbow chard stems.
  3. In your high-speed blender or the bowl of food processor fitted with an S-blade, blend the oil, cilantro, garlic, lime, cumin, salt, and paprika until smooth.
  4. Pour the sauce over the protein and vegetables, and toss to combine. This is a great place to get little ones involved!
  5. Turn the whole mixture out onto the prepared baking sheet, and spread to one even layer.
  6. Bake for 5 to 10 minutes, then toss, and bake an additional 5 to 10 minutes.
  7. If you like a “charred” flavor, switch your oven to broil, and broil for 3 to 4 minutes, watching carefully so the vegetables don’t burn.
  8. Serve family-style with cassava tortillas, salsa, guacamole, and cheese.