Fajita Chicken Casserole

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Step 3: Mix the Casserole Filling

  1. In a large mixing bowl, combine the sautéed vegetables with:
    • Shredded chicken
    • Diced tomatoes with green chilies (drained slightly if needed)
    • Sour cream
    • Cooked rice (if using)
    • Half of the shredded cheeses (cheddar and Monterey Jack)
  2. Stir everything together until evenly mixed. Taste and adjust seasoning as needed.

Step 4: Assemble the Casserole

  1. Pour the mixture into the prepared baking dish, spreading it evenly.
  2. Sprinkle the remaining cheese over the top.
  3. Optionally, scatter tortilla strips or crushed tortilla chips on top for extra crunch.

Step 5: Bake

Place the casserole in the preheated oven and bake for 20–25 minutes, until the cheese is melted and bubbly and the casserole is heated through.


Step 6: Serve

Remove from the oven and let it cool for 5 minutes. Garnish with fresh cilantro, avocado slices, and a squeeze of lime if desired. Serve with warm tortillas, chips, or a fresh salad on the side.


Tips for the Perfect Fajita Chicken Casserole

  • Chicken options: Rotisserie chicken, leftover grilled chicken, or even cooked ground chicken works well.
  • Cheese mix: Don’t be afraid to experiment with a blend of cheeses, like pepper jack for extra spice.
  • Make it ahead: Prepare the filling a day ahead and refrigerate. Bake just before serving.
  • Spice level: Add sliced jalapeños or a dash of hot sauce if you like it spicy.

This Fajita Chicken Casserole is a versatile, family-friendly dish that brings all the flavors of your favorite fajitas into a comforting, cheesy casserole. It’s perfect for weeknight dinners, meal prep, or even potlucks—guaranteed to disappear quickly!


If you want, I can also create a shortcut version that uses just one pan and minimal prep while keeping it super flavorful. It’s perfect for busy nights. Do you want me to do that?

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