Description
This Fajita Chicken Casserole is a creamy, cheesy, flavor-packed dish loaded with juicy chicken, colorful bell peppers, onions, and classic fajita spices. It’s low-carb, family-friendly, and perfect for busy weeknights. Everything bakes together in one dish — no need for tortillas unless you want them on the side.
🧾 Ingredients
For the Chicken & Veggies
2–3 chicken breasts (cut into bite-size pieces)
1 red bell pepper, sliced
1 yellow bell pepper, sliced
1 green bell pepper, sliced
1 medium onion, sliced
2 tbsp olive oil
Fajita Seasoning
1 tsp chili powder
1 tsp smoked paprika
1 tsp cumin
½ tsp garlic powder
½ tsp onion powder
½ tsp oregano
½ tsp salt
¼ tsp black pepper
¼ tsp red pepper flakes (optional for heat)
Creamy Sauce
1 cup sour cream or Greek yogurt
4 oz (½ cup) cream cheese, softened
½ cup shredded cheddar cheese
½ cup shredded mozzarella
Juice of ½ lime
1 tbsp chopped cilantro (optional)
Topping
Extra cheese (¼–½ cup)
Cilantro, lime wedges, jalapeños (optional)
👩🍳 Instructions (Step-by-Step)
1️⃣ Prep Chicken & Vegetables
In a bowl, combine:
chicken pieces
bell peppers
onion
olive oil
all fajita seasoning
Mix to coat evenly.
2️⃣ Make the Creamy Sauce
In another bowl, whisk:
sour cream or Greek yogurt
cream cheese
cheddar
mozzarella
lime juice
cilantro
Mix until smooth and creamy.
3️⃣ Combine Everything
Add seasoned chicken + veggies into a greased baking dish.
Spoon the creamy sauce on top and mix lightly so everything is coated.
4️⃣ Add Cheese
Sprinkle extra cheese over the top.
5️⃣ Bake
Bake in a preheated oven at:
375°F (190°C) for 25–30 minutes,
or until chicken is fully cooked and cheese is melted & bubbly.
6️⃣ Serve
Garnish with:
cilantro
lime wedges
sliced jalapeños
Serve with:
rice
tortillas
quinoa
cauliflower rice
salad
✨ Chef Tips
Cut the chicken into even pieces so they cook evenly.
For smoky flavor, add a splash of Worcestershire or liquid smoke.
Use pre-cooked shredded chicken to make it even faster.
Add black beans or corn for a Tex-Mex twist.
Use Greek yogurt for a lighter version.
📦 Storage & Meal Prep
Fridge: 3–4 days in an airtight container
Freezer: Up to 2 months (without peppers for best texture)
Reheat: Microwave or oven (350°F for 10–12 minutes)
❓ Q/A Section (Common Questions)
Q1: Can I use chicken thighs instead of chicken breasts?
Yes! Thighs stay juicier and add more flavor.
Q2: Can I make it without cream cheese?
Yes — replace with:
extra ½ cup sour cream OR
½ cup Greek yogurt OR
¼ cup heavy cream
Texture will be slightly different but still delicious.
Q3: Do I have to sauté the veggies first?
No, not necessary. They soften beautifully while baking.
But if you like charred fajita-style veggies, sauté 3–4 minutes first.
Q4: Can I make this low-carb or keto?
It already is!
Just serve with cauliflower rice or on its own.
Q5: My casserole came out watery — why?
Possible reasons:
Using frozen peppers (they release water)
Not draining chicken juices
Adding too much lime juice
Use fresh peppers for best results.

