Cheesy Chicken Fajita Casserole with Bell Peppers and Homestyle Spices Recipe

Introduction

Chicken Fajita Casserole brings the vibrant, smoky flavors of Tex-Mex fajitas into an easy, comforting one-pan dish. With tender chicken, colorful bell peppers, and melted cheese all baked together, it’s a perfect meal for busy weeknights or casual gatherings.

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 tablespoons olive oil
• Juice of 1 lime
• 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

1. Step 1: Preheat your oven to 400°F (200°C) and lightly grease a 9×13 baking dish.
2. Step 2: In a large bowl, toss the chicken strips with olive oil, lime juice, and the homemade fajita seasoning. Let marinate for at least 10–15 minutes.
3. Step 3: Add the sliced bell peppers and onion to the bowl and toss everything to coat evenly.
4. Step 4: Layer half of the chicken and vegetable mixture into the baking dish. Top with half the diced tomatoes and 1 cup of shredded cheese. Repeat with the remaining layers.
5. Step 5: Cover the dish with foil and bake for 20 minutes. Remove the foil and bake for another 10–15 minutes, until the cheese is melted and golden.
6. Step 6: Optionally, broil for 2–3 minutes at the end for extra browning. Garnish with fresh cilantro and serve with warm tortillas or rice.

Tips & Variations

• Marinate chicken overnight for even deeper flavor.
• Add black beans, roasted corn, or sliced jalapeños for texture and spice.
• Try mixing cheeses like Monterey Jack and pepper jack for a creamier, spicier finish.
• For a vegetarian version, substitute chicken with sautéed mushrooms, zucchini, and black beans.
• Serve over cauliflower rice or sautéed greens for a low-carb alternative.

Storage

Store leftover casserole in an airtight container in the refrigerator for up to 3–4 days. Reheat in the oven or microwave until warmed through. You can also assemble the casserole a day ahead and refrigerate before baking. To freeze, wrap tightly and freeze for up to 3 months; thaw overnight before baking.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

How do I improve the flavor of chicken casserole?

Use a homemade fajita seasoning and marinate the chicken in lime juice and spices for at least 30 minutes or overnight. Add roasted bell peppers and onions, and finish with fresh cilantro and lime wedges for brightness.

Can I make this chicken fajita casserole ahead of time?

Yes, you can assemble the casserole up to 24 hours before baking. Just keep it refrigerated until ready to bake. It also freezes well unbaked for up to 3 months; thaw overnight before cooking.

Cheesy Chicken Fajita Casserole with Bell Peppers and Homestyle Spices Recipe

Print Recipe

★★★★★

4.4 from 80 reviews

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.

• Author: Cleo
• 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 1x2x3x

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

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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