
The aroma of Spicy Southern Cheesy Chicken Spaghetti Casserole fills the kitchen with warmth and comfort. This creamy and cheesy dish is layered with tender chicken, spaghetti, and zesty spices that make every bite unforgettable. It is a casserole made for sharing, bringing people together around the table with flavor and heart.
I first made this casserole for a family dinner and my uncle declared it the best dish he had ever tasted. Since then it has been requested at nearly every gathering.
Ingredients
- Boneless Skinless Chicken Breasts: provide hearty protein and should be juicy when cooked. Choose fresh chicken for best results
- Spaghetti: gives structure and holds sauce well. Opt for high quality durum wheat pasta for the perfect bite
- Shredded Sharp Cheddar Cheese: adds bold flavor and creamy texture. Select a well aged cheddar for richness
- Fresh Bell Peppers: bring sweetness and crunch. Red and yellow varieties add beautiful color
- Cream of Chicken Soup: creates a smooth creamy base without extra fuss
- Paprika Cayenne Pepper and Garlic Powder: add the essential Southern kick. Fresh spices deliver stronger flavor
- Green Onions: add brightness and freshness. Use crisp green stalks for the best finish
Step by Step Instructions
- Prepare the Oven and Dish:
- Preheat the oven to 350°F or 175°C and grease a casserole dish so the cheesy mixture does not stick
- Cook the Chicken:
- Sear boneless chicken breasts in a large pot over medium heat about six to seven minutes per side until golden and fully cooked then shred or chop into bite sized pieces
- Boil the Pasta:
- In a separate pot cook spaghetti in salted water until al dente about eight to ten minutes then drain and set aside
- Mix the Ingredients:
- In a large bowl combine shredded chicken cooked pasta cream of chicken soup bell peppers spices and half the cheddar cheese stirring well so everything is coated
- Bake the Casserole:
- Transfer mixture to the greased dish sprinkle remaining cheese over the top and bake for twenty five to thirty minutes until golden and bubbling
- Add Freshness:
- Allow casserole to rest for five minutes then scatter sliced green onions over the top for a vibrant finish

My favorite part is the cheddar cheese which melts into the pasta creating pockets of gooey goodness. I still remember how this dish became a tradition at our family reunions where laughter and casserole always went hand in hand.
Storage Tips
Leftovers keep well in the fridge for up to three days in an airtight container. Reheat gently in the oven to maintain creamy texture or in the microwave for convenience.
Ingredient Substitutions
You can replace chicken with shrimp for a seafood twist. Rotini or penne pasta also works beautifully if you want something heartier. For extra creaminess stir in a little cream cheese.
Serving Suggestions
Serve this casserole with a fresh green salad or roasted vegetables to balance the richness. It also pairs wonderfully with garlic bread for a complete comforting meal.

Cultural Context
Southern casseroles are a staple of gatherings across the South where they symbolize comfort and hospitality. This version highlights bold Cajun inspired spices blended with classic cheesy pasta for a dish that feels both traditional and exciting.
Frequently Asked Questions About Recipes
- → Can I make this dish ahead of time?
Yes, assemble the casserole a day in advance, cover, and refrigerate. Bake when ready to serve.
- → What pasta works best besides spaghetti?
Penne, rotini, or fusilli also work well since they hold the sauce and cheese nicely.
- → How can I adjust the spice level?
Use less cayenne for mild heat or add extra chili flakes for more kick.
- → Can I swap the chicken for something else?
Yes, shrimp or turkey are great alternatives. You can also make it vegetarian by using beans or mushrooms.
- → What cheese gives the best flavor?
Sharp cheddar works best, but you can mix in cream cheese, mozzarella, or pepper jack for variety.
- → How do I store leftovers?
Keep in an airtight container in the fridge for up to three days. Reheat in the oven or microwave until warmed through.