If you have leftover chicken sitting in the fridge and don’t know what to make, this creamy chicken pasta bake is the perfect answer. It’s warm, cheesy, comforting, and packed with flavor in every bite. Tender chicken, pasta shells, sweet corn, creamy homemade sauce, and melted cheese come together under a buttery crunchy topping that makes this casserole completely irresistible.

This is the kind of easy family-style meal that everyone loves. It’s simple enough for busy weeknights, but comforting enough to feel like homemade comfort food at its best. Plus, it’s a great way to turn leftover chicken into something completely new and exciting.

Ingredients

For the Pasta Bake

• 2 cups small shell pasta
• 3 cups cooked chicken, cubed or shredded
• 3/4 cup corn kernels
• 1 cup sour cream
• 1 1/2 cups shredded sharp cheddar cheese
• 1 1/2 cups shredded Monterey Jack cheese
• 1/2 cup extra shredded cheese for topping

For the Cream Sauce

• 4 tablespoons butter
• 1 cup finely chopped onion
• 1/4 cup finely chopped orange bell pepper
• 2 large garlic cloves, minced
• 3 tablespoons all-purpose flour
• 1 1/2 cups whole milk
• 3 teaspoons chicken bouillon paste or powder
• Salt to taste
• Black pepper to taste
• Cayenne pepper to taste

For the Crunchy Topping

• 1/2 sleeve buttery crackers, crushed
• 3 tablespoons melted butter

Instructions

Bring a large pot of salted water to a boil. Add the pasta and cook according to package directions until just tender. Drain, rinse lightly, and set aside.

Preheat your oven to 350°F.

In a large skillet over medium-low heat, melt the butter.

Add the chopped onions and cook until softened and slightly translucent.

Stir in the bell pepper and garlic. Cook for about 1 minute until fragrant.

Sprinkle the flour into the skillet and stir continuously for a couple of minutes to cook out the raw flour taste.

Slowly pour in the milk while whisking constantly to create a smooth sauce.

Add the chicken bouillon, salt, black pepper, and a pinch of cayenne pepper. Continue whisking until the sauce becomes thick and creamy.

Remove the skillet from the heat.

In a large mixing bowl, combine the cooked pasta, chicken, corn, cheddar cheese, Monterey Jack cheese, and creamy sauce.

Add the sour cream and gently mix everything together until evenly combined.

Lightly grease a casserole dish and spread the pasta mixture evenly inside.

Sprinkle extra cheese over the top.

In a small bowl, mix the crushed crackers with melted butter until coated. Sprinkle the buttery crumbs evenly over the casserole.

Bake uncovered for about 35 minutes, or until hot, bubbly, and golden brown on top.

Allow the casserole to rest for 10 minutes before serving.

Notes and Tips

• Rotisserie chicken works perfectly if you don’t have leftover chicken at home.
• Small pasta shapes cook evenly and blend well with the creamy sauce.
• Add peas, broccoli, or spinach for extra vegetables and color.
• Monterey Jack melts beautifully, but mozzarella or Colby Jack also work well.
• The cracker topping adds a delicious buttery crunch, but breadcrumbs can be used instead.
• This casserole reheats wonderfully for lunch the next day.

Serve this creamy chicken pasta bake with a crisp salad or roasted vegetables for a complete comforting meal. If you try it, share your favorite mix-ins or cheese combinations and let others know how it turned out!