Easy Chicken Fajita Rice Casserole Recipe

This Chicken Fajita Rice Casserole is a cozy one-dish wonder that captures all the smoky, fresh flavors you love in fajitas. Think juicy chicken with bold seasoning, a colorful mix of bell peppers and onions, and fluffy rice cooked right in savory chicken broth—all topped with melty cheese that brings it home sweet home comfort style, all baked together in about an hour.

The prep is super simple—only about 15 minutes of hands-on work—and the oven does most of the job while you get a breather or prep a quick salad. This recipe is forgiving and flexible, so feel free to swap proteins, use brown rice or even quinoa, and toss in extras like beans or corn to make it your own. Keep scrolling for the full ingredients, detailed steps, a handy video, plus my best tips on prepping ahead, storing, and reheating for fuss-free dinners any night of the week.

What Makes It So Good

• Loaded with bold Tex-Mex flavors that bring tender chicken and colorful peppers to life—think the sizzling spices of Air Fryer Chicken Fajitas
• Super easy to make your own by swapping ingredients or adding your favorite extras
• Great for meal prep or make-ahead dinners that save time without skimping on flavor—see Easy Chicken Burrito Casserole for another Tex-Mex bake you can prep ahead

What Goes Into It

• 2 cups long-grain white or brown rice
• 2 cups chicken broth
• 1.5 lbs boneless skinless chicken breast or thighs, cut into bite-sized pieces
• 1 tablespoon olive oil
• 1 medium onion sliced
• 1 red bell pepper sliced
• 1 green bell pepper sliced
• 1 yellow bell pepper sliced
• 1 packet or 2 tablespoons fajita seasoning
• 1 cup shredded cheddar or Mexican blend cheese

How to Assemble and Bake

1. Heat a large skillet over medium heat.
2. Sauté sliced onion and bell peppers until soft and fragrant, then remove from heat and set aside.
3. Coat the chicken pieces with fajita seasoning.
4. Sear the chicken in the same skillet a few minutes per side until nicely browned.

5. Cut the chicken into bite-sized pieces if not already.

   

6. Preheat the oven to 375°F (190°C).
7. Grease a 9×13-inch baking dish and spread the uncooked rice evenly across the bottom.
8. Pour the chicken broth over the rice.
9. Add the seasoned chicken, the sautéed vegetables, and optional black beans, corn, or diced tomatoes if using.
10. Gently mix everything to combine.
11. Cover the dish with foil and bake 35–40 minutes, until the rice is tender and the chicken is cooked through.
12. Remove the foil, sprinkle shredded cheese over the top, and bake uncovered 5–10 minutes until the cheese is melted and bubbly.
13. Let the casserole rest 5 minutes before serving.

Smart Shortcuts and Flavor Tips

• Save time by using pre-cooked or rotisserie chicken—it’s a real game changer! For quick, juicy pieces you can toss right in, try making a batch of air fryer grilled chicken ahead of time.
• Try swapping out white rice for brown rice or quinoa to make it heartier and healthier.
• Turn up the heat by adding extra chili powder or some diced jalapeños if you like spice—or take flavor cues from Grilled Salsa Verde Pepper Jack Chicken for a zesty kick.
• Let it rest for 5 minutes after baking so all the flavors settle and come together beautifully.

Mix-Ins, Toppings, and Swaps

• Toppings: Freshen up with dollops of sour cream, sliced avocado, chopped cilantro, or zesty lime wedges for that fajita flair.
• Side dishes: Serve alongside a black bean salad, crispy tortilla chips with salsa, or a simple green salad—or add a refreshing side of street corn salad with Greek yogurt to round out the meal.

Storage and Make-Ahead Tips

• Refrigerate: Store any leftovers in an airtight container for up to 4 days to enjoy later. For another make-ahead chicken-and-rice dinner that keeps well, try Slow Cooker Lemon Herb Chicken and Rice.
• Freeze: Portion out and freeze for up to 3 months—just thaw overnight in the fridge before reheating. If you like stocking the freezer with casseroles, you might also enjoy High Protein Chicken Parmesan Casserole.
• Reheat: Warm it up in your oven at 350°F or zap it in the microwave until it’s hot all the way through.

Answers to Common Questions

Can I use brown rice instead of white rice?

You sure can! Just keep in mind brown rice takes longer to cook, so you might need to bake it a little longer and add a bit more broth to keep things moist.

Can I make this dish ahead of time?

Definitely! Assemble the whole casserole in your dish, cover it tightly, and keep it in the fridge until you’re ready to bake. Just give it an extra few minutes in the oven if the dish is cold going in. Prefer a set-and-forget Tex-Mex option? Try this Slow Cooker Taco Casserole.

What’s the best cheese to use?

I love using a Mexican cheese blend, cheddar, or pepper jack here—they melt so nicely and add great flavor.