Fajita Chicken Casserole

Easy • Cheesy • Family Favorite

This Fajita Chicken Casserole is packed with bold Tex-Mex flavors, tender chicken, colorful peppers, and gooey melted cheese. It’s an easy one-dish meal perfect for busy weeknights or casual gatherings!

Ingredients

4 boneless, skinless chicken breasts, cut into bite-sized pieces
1 packet (1 oz) fajita seasoning mix
1 tablespoon olive oil
1 red bell pepper, thinly sliced
1 green bell pepper, thinly sliced
1 yellow bell pepper, thinly sliced (optional but recommended)
1 medium onion, thinly sliced
1 cup cooked rice (white or brown)
1 cup canned black beans, drained and rinsed
1 cup corn kernels (canned or frozen)
1 cup salsa (mild or hot, your choice)
1½ cups shredded Mexican blend cheese (or cheddar & Monterey Jack)
Salt and black pepper, to taste
Fresh cilantro or green onions, for garnish (optional)

Instructions

Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
In a large bowl, toss the chicken pieces with the fajita seasoning until evenly coated.
Heat olive oil in a large skillet over medium heat.
Add the seasoned chicken and cook for 4–5 minutes, just until lightly browned (not fully cooked).
Add bell peppers and onion to the skillet. Sauté for 3–4 minutes until slightly softened.
Stir in cooked rice, black beans, corn, and salsa. Season lightly with salt and pepper.
Transfer the mixture to the prepared baking dish and spread evenly.
Sprinkle shredded cheese generously over the top.
Bake uncovered for 25–30 minutes, or until the chicken is fully cooked and the cheese is melted and bubbly.
Let rest for 5 minutes before serving. Garnish with fresh cilantro or green onions if desired.