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Sheet Pan Steak Fajita Quesadillas

These Sheet Pan Steak Fajita Quesadillas are the ultimate hands-off way to make multiple quesadillas at once! Tender strips of marinated steak are combined with caramelized peppers and onions, then loaded onto tortillas with melty cheese and baked until golden and crispy. I use my homemade fajita seasoning to infuse the steak with bold, authentic Tex-Mex flavors—a perfect blend of cumin, chili powder, and smoked paprika that makes these quesadillas taste like they came straight from your favorite restaurant. The beauty of this method is in its simplicity: you bake the tortillas open-faced until the cheese is melted and bubbly, then fold them over for instant quesadillas. No flipping, no stovetop monitoring, and no cooking them one by one. The result is perfectly crispy quesadillas with gooey cheese and flavorful filling, all finished at the same time. Serve them with a creamy, smoky chipotle lime sour cream sauce for the perfect finishing touch. Whether you're feeding a hungry family on a weeknight or hosting game day, these sheet pan quesadillas make it easy to serve a crowd with minimal effort and maximum flavor.
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Prep Time: 20 minutes
Cook Time: 25 minutes
2 min: 2 minutes
Total Time: 47 minutes
Servings: 12 servings
Calories: 339kcal
Author: Anjali

INGREDIENTS

For the Steak Marinade:

  • 1 lb skirt steak or flank steak he perfect cut for fajitas with great flavor and texture when sliced against the grain
  • 2-3 limes juiced
  • ¼ cup olive oil
  • 3 cloves garlic minced
  • 2 tablespoon Fajita Seasoning
  • salt and pepper adjust as per taste

For the Quesadillas:

  • 2 medium sized Bell Peppers (any color), sliced into strips
  • 1 large Onion sliced into strips
  • 3 cups Mexican cheese blend or Monterey Jack shredded
  • 6-8 large flour tortillas (10-inch)
  • 2 tbsp olive oil for cooking
  • salt and pepper as per taste

For the Chipotle Lime Sour Cream Sauce:

  • 1 cup Sour Cream
  • 2 tablespoon lime juice
  • 1-2 Chipotle peppers in adobo sauce minced
  • 1 teaspoon adobo sauce from the can
  • 1 clove garlic minced
  • freshly chopped Cilantro

INSTRUCTIONS

  • Combine lime juice, olive oil, garlic, cumin, chili powder, smoked paprika, salt, pepper, and cayenne in a bowl or zip-top bag. Add the steak, coat well, and refrigerate for 2-8 hours.
  • Remove steak from marinade and pat dry with paper towels. Heat a cast-iron skillet or grill pan over high heat until very hot. Sear the steak for 3-4 minutes per side for medium-rare (internal temperature of 130-135°F). Transfer to a cutting board and let rest for 5 minutes.
  • In the same pan over medium-high heat, add 2 tablespoons oil and cook the sliced peppers and onions for 8-10 minutes, stirring occasionally, until softened and slightly charred. Season with salt and pepper to taste.
  • Cut the rested steak against the grain into thin strips, about ¼-inch thick.
  • Set oven to 425°F. Spray one or two large baking sheets with cooking spray (use two if needed to avoid overcrowding).
  • Lay 6-8 tortillas flat on the prepared baking sheet(s), spacing them slightly apart. Sprinkle each tortilla with about ⅓ cup cheese, covering the entire surface. Divide the steak strips and vegetables evenly among the tortillas, placing them on one half of each tortilla. Top the fillings with an additional sprinkle of cheese (about 2 tablespoons per tortilla).
  • Place the sheet pan(s) in the oven and bake for 8-10 minutes until the cheese is melted and bubbly, and the edges of the tortillas are golden and crispy.
  • Remove from oven and immediately fold each tortilla in half over the fillings to create a half-moon quesadilla shape. Press down gently with a spatula to help seal. Let rest for 1-2 minutes, then cut each quesadilla into 2-3 wedges. Serve hot with chipotle lime sour cream sauce.

Nutrition

Nutrition Facts
Sheet Pan Steak Fajita Quesadillas
Amount Per Serving
Calories 339 Calories from Fat 207
% Daily Value*
Fat 23g35%
Saturated Fat 9g56%
Trans Fat 0.1g
Polyunsaturated Fat 1g
Monounsaturated Fat 9g
Cholesterol 62mg21%
Sodium 346mg15%
Potassium 237mg7%
Carbohydrates 17g6%
Fiber 3g13%
Sugar 4g4%
Protein 18g36%
Vitamin A 935IU19%
Vitamin C 31mg38%
Calcium 257mg26%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.
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