Cheesy Chicken Fajita Casserole with Bell Peppers and Homestyle Spices Recipe
Chicken Fajita Casserole is a vibrant, cheesy Tex-Mex dish that combines marinated chicken strips, colorful bell peppers, onions, and a homemade fajita seasoning blend, all baked together and topped with melted cheese. This easy, one-pan casserole delivers bold, authentic fajita flavors without the need for stovetop cooking, making it perfect for busy weeknights or meal prep. Served with fresh cilantro, lime wedges, and optional tortillas or rice, it offers versatility and crowd-pleasing taste for any occasion.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
- Yield: 6 servings 1x
- Category: Casserole
- Method: Baking
- Cuisine: Tex-Mex
Ingredients
Scale
Main Ingredients
- 1.5 pounds boneless, skinless chicken breasts or thighs, cut into strips
- 3 large bell peppers (red, yellow, green), sliced
- 1 large onion, sliced
- 2 cups shredded cheese (cheddar, Monterey Jack, or pepper jack)
- 10 oz diced tomatoes with green chilies, drained
- 2 tbsp olive oil
- 1 lime, juiced
- Fresh cilantro, chopped, for garnish
Homemade Fajita Seasoning
- 2 tsp chili powder
- 1 tsp smoked paprika
- 1 tsp ground cumin
- 1 tsp garlic powder
- 1 tsp onion powder
- 0.5 tsp dried oregano
- 0.25 tsp cayenne pepper (adjust to taste)
- Salt and black pepper, to taste
Instructions
- Preheat and Prep: Preheat your oven to 400°F (200°C). Lightly grease a 9×13 baking dish with olive oil or cooking spray to prevent sticking.
- Season the Chicken: In a large bowl, toss the chicken strips with 2 tablespoons olive oil, fresh lime juice, and the homemade fajita seasoning blend. Let the chicken marinate for at least 10–15 minutes to absorb the flavors.
- Combine the Veggies: Add the sliced bell peppers and onion to the bowl with the chicken. Toss everything together to coat evenly with the oil, lime, and spices.
- Layer in the Baking Dish: Spread half of the chicken and vegetable mixture evenly in the prepared baking dish. Top this layer with half of the drained diced tomatoes with green chilies and sprinkle with 1 cup of shredded cheese. Repeat the layering process using the remaining chicken-veggie mix, tomatoes, and cheese to build the casserole.
- Bake to Perfection: Cover the casserole dish tightly with foil and bake in the preheated oven for 20 minutes. Then, remove the foil and continue baking for another 10–15 minutes, or until the cheese is melted, bubbly, and golden brown.
- Optional Broil: For extra browning and a slightly crispy cheese topping, broil the casserole on high for 2–3 minutes at the end of baking, watching carefully to avoid burning.
- Garnish and Serve: Remove the casserole from the oven and let it rest for 5 minutes. Sprinkle fresh chopped cilantro on top and serve with warm tortillas, rice, lime wedges, sour cream, or your favorite toppings.
Notes
- Marinate chicken up to 24 hours ahead for deeper flavor and better meal prep options.
- For extra flavor and texture, add optional ingredients like black beans, roasted corn, or sliced jalapeños.
- Cheese variations such as mixing Monterey Jack, cheddar, and pepper jack create a melty, flavorful topping.
- To make a vegetarian version, substitute chicken with sautéed mushrooms, black beans, and zucchini, using the same seasoning.
- Assemble casserole ahead and refrigerate up to 24 hours before baking or freeze unbaked for up to 3 months.
- Leftovers keep well refrigerated for 3–4 days and reheat nicely.
- Adjust cayenne and chili powder to control spice level; omit for a milder version for kids.
- Serve with warm tortillas, Mexican rice, or sautéed greens depending on your desired meal style.
Keywords: Chicken fajita casserole, baked fajitas, Tex-Mex casserole, easy dinner, one-pan meal, fajita seasoning, cheesy casserole, meal prep dinner
