Fajita Chicken Casserole

ByLovely Recipes

Introduction

This Fajita Chicken Casserole is a delicious, cheesy, and easy-to-make dish packed with bold Tex-Mex flavors. Perfect for a quick weeknight dinner, this casserole combines tender chicken, sautéed bell peppers, onions, and a creamy cheese topping for a comforting meal that the whole family will love.

Why You’ll Love This Recipe

  • One-Pan Meal – Easy to prepare and clean up.
  • Loaded with Flavor – A perfect blend of fajita seasoning, creamy cheese, and fresh veggies.
  • Customizable – Add your favorite toppings or switch up the protein.
  • Great for Meal Prep – Tastes even better the next day!

Ingredients

For the Casserole:

  • 2 lbs boneless, skinless chicken breasts (cut into strips)
  • 1 tbsp olive oil
  • 1 red bell pepper, sliced
  • 1 yellow bell pepper, sliced
  • 1 green bell pepper, sliced
  • 1 small onion, sliced
  • 1 tsp salt
  • ½ tsp black pepper
  • 1 tsp chili powder
  • 1 tsp smoked paprika
  • 1 tsp ground cumin
  • ½ tsp garlic powder
  • ½ tsp onion powder
  • 1 cup shredded cheddar cheese
  • 1 cup shredded Monterey Jack cheese
  • ½ cup sour cream
  • ½ cup cream cheese, softened
  • 1 can (10 oz) diced tomatoes with green chilies (drained)

Optional Toppings:

  • Chopped cilantro
  • Sliced jalapeños
  • Avocado slices
  • Sour cream
  • Lime wedges

Instructions

Step 1: Prepare the Chicken & Veggies

  1. Preheat oven to 375°F.
  2. Heat olive oil in a large skillet over medium heat.
  3. Add sliced chicken and season with salt, pepper, chili powder, smoked paprika, cumin, garlic powder, and onion powder.
  4. Cook for 5-7 minutes until chicken is browned but not fully cooked.
  5. Add bell peppers and onions, sauté for another 3-4 minutes until slightly softened.

Step 2: Assemble the Casserole

  1. Transfer chicken and vegetable mixture to a greased 9×13-inch baking dish.
  2. In a small bowl, mix sour cream, cream cheese, and diced tomatoes.
  3. Spread the mixture evenly over the chicken and vegetables.
  4. Sprinkle shredded cheddar and Monterey Jack cheese on top.

Step 3: Bake

  1. Place in preheated oven and bake for 20-25 minutes until cheese is melted and bubbly.
  2. Remove from oven and let sit for 5 minutes.

Step 4: Serve & Enjoy

  • Garnish with chopped cilantro, sliced jalapeños, or avocado.
  • Serve with warm tortillas, rice, or a fresh side salad.

Tips for the Best Fajita Chicken Casserole

  • Use Rotisserie Chicken – Save time by using pre-cooked shredded chicken.
  • Make it Spicier – Add extra chili powder or diced jalapeños.
  • Add Crunch – Top with crushed tortilla chips before baking.

Storage & Reheating

  • Store leftovers in an airtight container for up to 3 days.
  • Reheat in the oven at 350°F for 10 minutes or in the microwave for 1-2 minutes.

Enjoy this Fajita Chicken Casserole for an easy, cheesy, and flavor-packed meal that’s perfect for any night of the week!