Description
This Fajita Chicken Casserole is a comforting, cheesy, and flavor-packed dish that combines tender chicken, colorful bell peppers, onions, and Mexican spices baked together in a creamy, cheesy sauce. It’s everything you love about chicken fajitas but made easier in casserole form — perfect for weeknight dinners, potlucks, or meal prep. Low-carb, gluten-free, and family-friendly!
Ingredients For Fajita Chicken Casserole
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1 ½ lbs (700g) chicken breast, cut into thin strips
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2 tbsp olive oil
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1 red bell pepper, sliced
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1 green bell pepper, sliced
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1 yellow bell pepper, sliced
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1 medium onion, sliced
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2 tsp chili powder
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1 tsp smoked paprika
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1 tsp ground cumin
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½ tsp garlic powder
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½ tsp onion powder
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½ tsp oregano
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½ tsp salt (adjust to taste)
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½ tsp black pepper
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1 cup salsa (or diced tomatoes with green chilies)
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½ cup sour cream (or Greek yogurt for lighter version)
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1 cup shredded cheddar cheese
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1 cup shredded mozzarella cheese
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Fresh cilantro, chopped (for garnish)
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Optional toppings: jalapeños, avocado slices, lime wedges
Instructions
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Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish.
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In a large skillet, heat olive oil over medium heat. Add chicken strips and cook until lightly browned (about 4–5 minutes). Remove and set aside.
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In the same skillet, add onions and bell peppers. Cook for 4–5 minutes until slightly softened.
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Stir in chili powder, paprika, cumin, garlic powder, onion powder, oregano, salt, and black pepper. Mix well.
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Add salsa and sour cream, stir to combine. Return the chicken to the skillet and mix everything together.
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Transfer mixture into the prepared baking dish. Sprinkle evenly with cheddar and mozzarella cheese.
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Bake uncovered for 20–25 minutes, until cheese is melted and bubbly.
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Garnish with fresh cilantro, and serve hot with your favorite sides (rice, tortillas, or salad).
Servings
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Makes 6 servings
Nutritional Information (per serving, approx.)
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Calories: 310 kcal
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Protein: 28g
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Fat: 18g
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Carbohydrates: 10g
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Fiber: 2g
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Sugar: 4g
(Values will vary depending on cheese and salsa used.)
Notes
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You can swap sour cream with Greek yogurt for a lighter option.
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For extra heat, add jalapeños or hot sauce.
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To make it keto-friendly, use low-carb salsa.
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Works with boneless chicken thighs for juicier meat.
Tips
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Meal Prep Friendly: Store leftovers in airtight containers for up to 4 days.
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Freezer Option: Assemble and freeze before baking. Bake straight from frozen at 375°F, adding an extra 15–20 minutes.
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Cheese Choice: A blend of cheddar and Monterey Jack gives the best gooey melt.
Health Benefits
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High in lean protein from chicken.
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Rich in antioxidants & vitamins from bell peppers (Vitamin C, A, potassium).
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Lower-carb alternative to fajitas served with tortillas.
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Balanced meal that can fit into keto, gluten-free, or high-protein diets.
Q/A
Q: Can I make this ahead of time?
A: Yes! Assemble it up to a day before, cover, refrigerate, and bake when ready.
Q: What can I serve it with?
A: Mexican rice, cauliflower rice (low-carb), tortillas, or a fresh green salad.
Q: Can I make it dairy-free?
A: Yes — use dairy-free sour cream and cheese alternatives.
Q: Can I add beans or corn?
A: Absolutely, for a heartier casserole — but it will increase carbs.