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Spicy Southern Chicken Spaghetti Casserole

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Harmony

Published:

November 24, 2025

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Spicy Southern chicken spaghetti casserole with melted cheese and peppers.

I discovered a simple trick to keep the pasta from getting mushy in a baked casserole, and it changed my kitchen game. This Spicy Southern Chicken Spaghetti Casserole stays perfectly al dente, with every bite offering a creamy, spicy sauce clinging to the noodles.

There is nothing quite like the comfort of a bubbling casserole coming out of the oven. The aroma fills the whole house, promising something warm and satisfying. This particular Spicy Southern Chicken Spaghetti Casserole has become a staple in my home, especially on those busy weeknights when you need something hearty, flavorful, and wonderfully easy to pull together. It is the kind of meal that feels like a hug from the inside, a true celebration of Southern comfort food with just the right amount of kick.

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Spicy Southern Chicken Spaghetti Casserole

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This Spicy Southern Chicken Spaghetti Casserole stays perfectly al dente, with every bite offering a creamy, spicy sauce clinging to the noodles. It is the kind of meal that feels like a hug from the inside, a true celebration of Southern comfort food with just the right amount of kick.

  • Author: Harmony
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 6 servings 1x
  • Category: Main Course
  • Method: Baking
  • Cuisine: Southern

Ingredients

Scale
  • 8 ounces spaghetti, broken in half
  • 2 cups cooked chicken, shredded or diced
  • 1 tablespoon olive oil
  • 1 medium yellow onion, diced
  • 1 green bell pepper, diced
  • 2 cloves garlic, minced
  • 1 (10.5 ounce) can cream of chicken soup
  • 1 (10 ounce) can Rotel diced tomatoes with green chilies, undrained
  • 1 cup chicken broth
  • 8 ounces Velveeta cheese, cubed
  • 1 cup shredded sharp cheddar cheese, divided
  • 1/2 cup sour cream
  • 1 teaspoon paprika
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon cayenne pepper
  • Optional garnish: sliced green onions, chopped fresh parsley

Instructions

  1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the broken spaghetti and cook for 1-2 minutes less than the package directions indicate for al dente. Drain well.
  2. Sauté the Veggies: While the pasta cooks, heat the olive oil in a large skillet or Dutch oven over medium heat. Add the diced onion and bell pepper and cook for 5-7 minutes, until softened. Add the minced garlic and cook for one more minute, until fragrant.
  3. Create the Sauce: Reduce the heat to low. To the skillet, add the cream of chicken soup, undrained Rotel, chicken broth, and cubed Velveeta. Stir continuously until the cheese is completely melted and the sauce is smooth and creamy.
  4. Combine Everything: Remove the skillet from the heat. Stir in the sour cream, shredded chicken, the cooked and drained spaghetti, paprika, black pepper, and cayenne. Mix until every noodle is coated in that delicious, creamy, and spicy sauce.
  5. Assemble and Bake: Transfer the entire mixture to a greased 9×13 inch baking dish. Sprinkle the remaining 1 cup of shredded cheddar cheese evenly over the top.
  6. Bake to Perfection: Bake in a preheated 350°F (175°C) oven for 25-30 minutes, or until the cheese is melted, bubbly, and just starting to turn golden in spots.
  7. Rest and Serve: Let the Spicy Southern Chicken Spaghetti Casserole rest for about 5-10 minutes before serving. This allows the sauce to set slightly, making it easier to slice and serve.

Notes

Smart Substitutions: Pasta: Any similar long pasta like linguine or thin spaghetti works well. Chicken: This is one of the best chicken dishes recipes for using up leftover roasted chicken or a store-bought rotisserie chicken to save time. Cheese: If you do not have Velveeta, you can substitute with 4 ounces of cream cheese for a similar creamy texture. For a spicier kick, use pepper jack cheese in place of the cheddar. Soup: Cream of mushroom or celery soup can be used instead of cream of chicken. Heat Level: For a milder Spicy Southern Chicken Spaghetti Casserole, use mild Rotel. For more heat, use the hot variety or add an extra pinch of cayenne.

Nutrition

  • Serving Size: 1 serving
  • Calories: 485
  • Fat: 22g
  • Carbohydrates: 38g
  • Protein: 32g

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Ingredients List for Spicy Southern Chicken Spaghetti Casserole

This Spicy Southern Chicken Spaghetti Casserole brings together simple, flavorful ingredients to create a truly memorable meal. You will likely have many of these items in your pantry already.

Ingredients for Spicy Southern Chicken Spaghetti Casserole

  • 8 ounces spaghetti, broken in half
  • 2 cups cooked chicken, shredded or diced (rotisserie chicken works perfectly here)
  • 1 tablespoon olive oil
  • 1 medium yellow onion, diced
  • 1 green bell pepper, diced
  • 2 cloves garlic, minced
  • 1 (10.5 ounce) can cream of chicken soup
  • 1 (10 ounce) can Rotel diced tomatoes with green chilies, undrained
  • 1 cup chicken broth
  • 8 ounces Velveeta cheese, cubed
  • 1 cup shredded sharp cheddar cheese, divided
  • 1/2 cup sour cream
  • 1 teaspoon paprika
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon cayenne pepper (adjust to your preferred heat level)
  • Optional garnish: sliced green onions, chopped fresh parsley

Smart Substitutions:

  • Pasta: Any similar long pasta like linguine or thin spaghetti works well.
  • Chicken: This is one of the best chicken dishes recipes for using up leftover roasted chicken or a store-bought rotisserie chicken to save time.
  • Cheese: If you do not have Velveeta, you can substitute with 4 ounces of cream cheese for a similar creamy texture. For a spicier kick, use pepper jack cheese in place of the cheddar.
  • Soup: Cream of mushroom or celery soup can be used instead of cream of chicken.
  • Heat Level: For a milder Spicy Southern Chicken Spaghetti Casserole, use mild Rotel. For more heat, use the hot variety or add an extra pinch of cayenne.

Timing for Your Spicy Southern Chicken Spaghetti Casserole

Getting this comforting meal on the table is surprisingly quick, making it one of my favorite fast dinner recipes.

  • Prep time: 15 minutes
  • Cook time: 30 minutes
  • Total time: 45 minutes

This is about 20% faster than many other baked pasta dishes because we are using pre-cooked chicken and a simple, no-fuss sauce.

Step-by-Step Instructions for Spicy Southern Chicken Spaghetti Casserole

Follow these simple steps for a perfectly creamy and flavorful casserole every single time.

  1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the broken spaghetti and cook for 1-2 minutes less than the package directions indicate for al dente. It will continue to cook in the oven, and this is the secret to avoiding a mushy texture. Drain well.
  2. Sauté the Veggies: While the pasta cooks, heat the olive oil in a large skillet or Dutch oven over medium heat. Add the diced onion and bell pepper and cook for 5-7 minutes, until softened. Add the minced garlic and cook for one more minute, until fragrant.
  3. Create the Sauce: Reduce the heat to low. To the skillet, add the cream of chicken soup, undrained Rotel, chicken broth, and cubed Velveeta. Stir continuously until the cheese is completely melted and the sauce is smooth and creamy.
  4. Combine Everything: Remove the skillet from the heat. Stir in the sour cream, shredded chicken, the cooked and drained spaghetti, paprika, black pepper, and cayenne. Mix until every noodle is coated in that delicious, creamy, and spicy sauce.
  5. Assemble and Bake: Transfer the entire mixture to a greased 9×13 inch baking dish. Sprinkle the remaining 1 cup of shredded cheddar cheese evenly over the top.
  6. Bake to Perfection: Bake in a preheated 350°F (175°C) oven for 25-30 minutes, or until the cheese is melted, bubbly, and just starting to turn golden in spots.
  7. Rest and Serve: Let the Spicy Southern Chicken Spaghetti Casserole rest for about 5-10 minutes before serving. This allows the sauce to set slightly, making it easier to slice and serve.

Nutritional Information for Spicy Southern Chicken Spaghetti Casserole

This information is per serving, assuming the casserole is divided into 6 equal portions. It is a hearty and satisfying meal.

  • Calories: 485
  • Protein: 32g
  • Carbohydrates: 38g
  • Fat: 22g
  • Key Nutrients: This dish is a good source of calcium from the cheese and protein from the chicken, which helps keep you full and supports muscle maintenance.

Equipment Needed for Spicy Southern Chicken Spaghetti Casserole

You do not need any fancy tools for this easy casserole recipe. A regular kitchen will have everything required.

  • Large pot for boiling pasta
  • Large skillet or Dutch oven (a 4-quart or larger works best)
  • 9×13 inch baking dish
  • Colander for draining pasta
  • Wooden spoon or spatula
  • Measuring cups and spoons

Why You’ll Love This Spicy Southern Chicken Spaghetti Casserole

This recipe has earned its place in my regular dinner rotation for so many reasons.

  • Effortless for Busy Nights: It comes together in under an hour, making it a champion of fast dinners.
  • The Ultimate Comfort Food: It is creamy, cheesy, and warm, hitting all the right notes for a cozy family meal.
  • Feeds a Crowd: This Spicy Southern Chicken Spaghetti Casserole is perfect for potlucks, church suppers, or simply feeding a hungry family with leftovers for lunch the next day.
  • Incredibly Adaptable: You can easily adjust the spice level, swap ingredients based on what you have, and even prepare it ahead of time.

Healthier Alternatives for Spicy Southern Chicken Spaghetti Casserole

Recipe variations for Spicy Southern Chicken Spaghetti Casserole

You can easily lighten up this comforting dish without sacrificing flavor.

  • Gluten-Free: Use your favorite gluten-free spaghetti and ensure your cream of chicken soup and chicken broth are certified gluten-free.
  • Lower Carb: Substitute the spaghetti with spiralized zucchini or spaghetti squash. You may need to reduce the baking time slightly as these vegetables release more water.
  • Lighter Dairy: Use low-fat cream of chicken soup, reduced-fat Velveeta, and light sour cream. You can also reduce the amount of cheddar cheese on top.
  • Higher Protein: Add an extra cup of chicken or stir in a can of rinsed white beans when you combine the ingredients.

Serving Suggestions for Spicy Southern Chicken Spaghetti Casserole

This hearty casserole is a meal in itself, but it pairs beautifully with a few simple sides.

  • A Crisp Salad: A simple green salad with a tangy vinaigrette helps cut through the richness of the casserole.
  • Garlic Bread: For the ultimate comfort food experience, nothing beats a warm, buttery slice of garlic bread to scoop up any extra sauce.
  • Steamed Vegetables: Simple steamed green beans, broccoli, or roasted asparagus add a fresh, healthy element to the plate.
  • For a Potluck: This Cheesy Chicken Spaghetti is always a hit. Let it cool completely before transporting, then reheat it covered at the gathering.

If you love this kind of easy, baked comfort food, you will adore my Savory Pierogi Casserole with Kielbasa. It is another one-dish wonder that the whole family loves.

Common Mistakes to Avoid with Spicy Southern Chicken Spaghetti Casserole

A few small missteps can change the texture of your final dish. Here is how to avoid them.

  • Overcooking the Pasta: This is the number one mistake. An al dente pasta is crucial because it soaks up the sauce and softens perfectly in the oven without turning to mush.
  • Not Seasoning the Pasta Water: Be generous with salt when boiling your spaghetti. It is your one chance to season the pasta from the inside out.
  • Skipping the Veggie Sauté: Taking the few extra minutes to cook the onions and peppers until soft is essential. It deepens their flavor and removes any raw bite, which makes the entire Spicy Southern Chicken Spaghetti Casserole taste more developed.
  • Adding Cold Ingredients: Make sure your sour cream is at room temperature before stirring it in to prevent the sauce from breaking or becoming grainy.

For another fantastic one-pan meal that simplifies cleanup, check out my One Pan Bold Honey BBQ Chicken Rice.

Storing Tips for Spicy Southern Chicken Spaghetti Casserole

Storage and leftovers for Spicy Southern Chicken Spaghetti Casserole

This casserole is fantastic for leftovers and meal prep.

  • Refrigerator: Store any leftovers in an airtight container in the refrigerator for up to 4 days.
  • Freezer: This Spicy Southern Chicken Spaghetti Casserole freezes beautifully. Assemble the casserole but do not bake it. Wrap the entire baking dish tightly in plastic wrap and then foil. Freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding a few extra minutes to the bake time if needed.
  • Reheating: Reheat individual portions in the microwave. For larger portions, reheat in a 350°F oven, covered with foil, until warmed through. You may want to sprinkle a little extra cheese or a splash of broth over the top before reheating to keep it moist.

If you are a fan of creamy, chicken-based dishes, you must try my The Easiest Crockpot White Chicken Chili with Cream Cheese. It is another set-it-and-forget-it meal that delivers on flavor.

Conclusion for Spicy Southern Chicken Spaghetti Casserole

This Spicy Southern Chicken Spaghetti Casserole is more than just a recipe, it is a reliable, joyful, and deeply satisfying meal that brings everyone to the table. It proves that you do not need complicated techniques or hard-to-find ingredients to create something truly special. Simple ingredients, warm memories, and a whole lot of flavor is what home cooking is all about.

I hope this recipe becomes a cherished part of your own family dinners. I would love to hear how it turns out for you. Let me know in the comments, and don’t forget to tag @HarmonyMeal on Pinterest so I can see your beautiful creations.

For more easy and comforting chicken dinner recipes, be sure to explore my Slow Cooker Chicken Pot Pie and my incredibly simple Crockpot Ravioli Lasagna. Happy cooking.

FAQs about Spicy Southern Chicken Spaghetti Casserole

What makes Southern Chicken Spaghetti Casserole “Southern” and “spicy”?

“Southern” typically refers to the use of cream of mushroom or chicken soup, Velveeta or cheddar cheese, and often a bell pepper and onion base. The “spicy” element is achieved through ingredients like jalapeños, cayenne pepper, hot sauce, or spicy diced tomatoes.

What kind of cheese is best for a creamy, spicy chicken spaghetti casserole?

For maximum creaminess and a classic Southern texture, Velveeta cheese is often preferred. Sharp cheddar or a blend of Colby Jack and Monterey Jack can also be used to add flavor and melt beautifully, especially if you prefer a less processed option.

Can I use rotisserie chicken for Spicy Southern Chicken Spaghetti Casserole?

Absolutely! Using pre-cooked rotisserie chicken is a fantastic time-saver. Simply shred or dice the chicken and incorporate it into your recipe as you would cooked chicken breast or thighs, making sure to remove any skin and bones.

How do I adjust the spice level in a Southern Chicken Spaghetti Casserole?

To adjust spice, start with a smaller amount of jalapeños, cayenne, or hot sauce and taste as you go. For more heat, add extra peppers (including seeds for more intensity), a dash more hot sauce, or a pinch of red pepper flakes. For less spice, omit the fresh peppers or use milder ones, and reduce cayenne.

What sides pair well with Spicy Southern Chicken Spaghetti Casserole?

This rich casserole pairs wonderfully with light, fresh sides. A simple green salad with a vinaigrette, steamed green beans, corn on the cob, or crusty garlic bread are excellent choices to complement its savory, spicy profile.

How long does Spicy Southern Chicken Spaghetti Casserole last in the refrigerator?

When stored properly in an airtight container, leftover Spicy Southern Chicken Spaghetti Casserole can be safely refrigerated for 3 to 4 days. Ensure it’s cooled completely before transferring to the fridge.

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