Prep & Preheat
Preheat oven to 375°F (190°C).
Lightly grease a 9x13-inch baking dish.
Cook Chicken & Veggies
Heat oil in a large skillet over medium-high heat.
Add diced chicken and cook for 5–7 minutes until no longer pink.
Push chicken to one side; add onions and bell peppers. Sauté for 5 minutes until softened.
Stir in garlic and fajita seasoning; cook 1 minute until fragrant.
Layer the Casserole
Spread cooked rice evenly in the baking dish.
Top with the chicken and veggie mixture.
Mix in salsa and black beans (if using), then spread evenly.
Sprinkle 1 cup of cheese over the top.
Bake to Perfection
Cover with foil and bake for 20 minutes.
Remove foil, add remaining ½ cup cheese, and bake uncovered for 10 more minutes (or until bubbly).
Serve & Enjoy!
Let cool for 5 minutes, then garnish with cilantro.
Serve with toppings like sour cream, guacamole, or lime wedges.
Serving Ideas
For a Tex-Mex twist: Pair with warm tortillas or crispy tortilla chips.
Lighten it up: Serve with a side salad or grilled corn.
Make it a fiesta: Set out toppings for a build-your-own bowl bar!