This Chicken Fajita Casserole layers juicy seasoned chicken, roasted peppers and onions, and melted cheese into a creamy, comforting one-dish meal.
1½ lbs boneless chicken breasts or thighs
3 bell peppers (mixed colors), sliced
1 large onion, sliced
2 tbsp olive oil
1 tbsp fajita seasoning (or homemade blend)
4 oz cream cheese, softened
1½ cups shredded Monterey Jack or cheddar cheese
Optional: black beans, corn, diced tomatoes, jalapeños
Preheat oven to 375°F. Grease a 9×13 casserole dish.
Toss chicken, peppers, and onion with oil and seasoning. Roast on a sheet pan for 20–25 minutes.
Mix hot roasted ingredients with cream cheese in a bowl until smooth.
Transfer to casserole dish. Top with shredded cheese.
Bake for 15–20 minutes until bubbly. Broil 2 minutes if desired.
Let rest 5 minutes, then serve.
Add beans or rice for a hearty variation. Store leftovers in fridge up to 4 days. Freeze before baking for make-ahead meals.