Fajita Chicken Casserole, and it quickly became one of those recipes my family keeps asking me to make again. My best friend actually recommended it after bringing a similar dish to a potluck, and I couldn’t stop thinking about how creamy, cheesy, and flavorful it was.

It had been one of those exhausting weeks where I felt completely drained, and I wanted dinner to be easy but still comforting. Whenever I’m stressed, casseroles are my go-to because everything goes into one dish, and somehow the oven does all the hard work for me. On weekends, I also love making meals that bring everyone to the table without spending hours cooking.

Last Sunday, I had chicken in the fridge and colorful bell peppers that needed to be used, so this recipe felt perfect. While it baked, the smell of seasoned chicken, peppers, onions, and melted cheese filled the kitchen. My husband kept asking if dinner was ready, and my kids were already grabbing tortilla chips to dip into the cheesy edges.

When I served it, everyone absolutely loved it. My husband went back for seconds, my kids cleaned their plates, and even I was surprised by how easy it was for something that tasted this good.

Now this casserole has become one of my favorite meals when I’m happy, stressed, or just need something simple that always makes everyone happy.

🌮 Fajita Chicken Casserole

Prep Time:

15 minutes

Cook Time:

35 minutes

Total Time:

50 minutes

Servings:

6 servings

Ingredients

• 2 lbs boneless skinless chicken breasts, cubed
• 3 bell peppers (red, green, yellow), sliced
• 1 large onion, sliced
• 1 packet fajita seasoning (or homemade seasoning)
• 1 cup sour cream
• 8 oz cream cheese, softened
• 1 can diced tomatoes with green chilies, drained
• 2 cups shredded Mexican cheese blend
• 1 tablespoon olive oil
• Salt and pepper to taste

Instructions

Step 1: Preheat oven

Preheat oven to 375°F (190°C).

Step 2: Prepare chicken

Season chicken with fajita seasoning, salt, and pepper.

Step 3: Cook vegetables

Sauté peppers and onions in olive oil for 5 minutes.

Step 4: Mix casserole filling

Combine chicken, vegetables, sour cream, cream cheese, tomatoes, and 1 cup cheese.

Step 5: Assemble

Spread mixture into a greased casserole dish.

Step 6: Add cheese

Top with remaining cheese.

Step 7: Bake

Bake for 30–35 minutes until chicken is fully cooked and cheese is bubbly.

Step 8: Serve

Serve with rice, tortillas, salad, or enjoy low-carb style.

Nutrition (Per Serving Approx.)

• Calories: 420
• Protein: 38g
• Carbs: 8g
• Fat: 25g

Q&A

Can I use rotisserie chicken?

Yes, reduce baking time.

Can I make it keto?

Yes, it’s naturally low-carb.

Can I freeze it?

Absolutely, freeze for up to 2 months.

What toppings go well?

Avocado, sour cream, salsa, cilantro.

Can I make it spicy?

Add jalapeños or extra chili powder.