Chicken Alfredo casserole is a creamy baked pasta dinner made with tender chicken, penne pasta, Alfredo sauce, mozzarella cheese, cheddar cheese, milk, garlic powder, and onion powder. It turns classic chicken Alfredo into an easy casserole that feels cozy, cheesy, and perfect for family dinner.

This recipe is simple because the chicken and pasta cook first, then everything gets mixed with Alfredo sauce and cheese before baking. The result is a creamy chicken casserole with a bubbly melted cheese topping and a rich comfort food flavor.

Recipe Overview

Detail	Information
Prep Time	20 minutes
Cook Time	40 minutes
Total Time	1 hour
Servings	6 servings
Difficulty	Easy
Course	Dinner
Cuisine	American
Method	Baked Casserole

Why You’ll Love This Chicken Alfredo Casserole

This chicken Alfredo casserole is creamy, cheesy, and very comforting. It uses simple ingredients but tastes like a rich baked pasta dinner that works well for busy nights.

It is also a good Chicken Casserole Easy recipe because the steps are simple. Cook the chicken, cook the pasta, mix everything with Alfredo sauce, add cheese, and bake until hot and bubbly.

This Easy Casserole works especially well for family dinner. The Alfredo sauce keeps the pasta creamy, the chicken adds protein, and the mozzarella and cheddar cheese create a melted topping that makes every serving feel satisfying.

Ingredients

Ingredient	Quantity	Notes
Skinless, boneless chicken breast halves	3	Cooked, then cut into bite-size pieces
Penne pasta	1 package, 8 oz	Cook until tender but firm
Alfredo sauce	1/2 jar, 16 oz	About 1 cup
Shredded mozzarella cheese, divided	1 1/2 cups	Use half inside and half on top
Milk	1/4 cup	Loosens the Alfredo sauce
Onion powder	1 tablespoon	Adds savory flavor
Garlic powder	1 tablespoon	Adds classic Alfredo-style flavor
Shredded cheddar cheese	1 cup	Adds a cheesy topping

How To Make Chicken Alfredo Casserole

1. Preheat the oven to 350°F.
2. Place the chicken breasts into a pot and cover them with water.
3. Bring the water to a boil over high heat.
4. Reduce the heat and simmer the chicken for about 15 minutes, or until the chicken is no longer pink in the center and the juices run clear.
5. Remove the chicken from the pot and let it cool slightly.
6. Cut the cooked chicken into bite-size pieces.
7. While the chicken cooks, bring a large pot of lightly salted water to a boil.
8. Add the penne pasta.
9. Cook the pasta until tender but still firm to the bite, about 11 minutes, or according to the package directions.
10. Drain the pasta well.
11. In a large mixing bowl, combine the cooked chicken, drained penne pasta, Alfredo sauce, half of the mozzarella cheese, milk, onion powder, and garlic powder.
12. Stir until the chicken and pasta are evenly coated in the creamy sauce.
13. Pour the mixture into a 1 1/2-quart casserole dish.
14. Sprinkle the remaining mozzarella cheese over the top.
15. Add the shredded cheddar cheese on top.
16. Bake for about 25 minutes, or until the cheese is melted and the casserole is hot and bubbly.
17. Let the casserole rest for 5 minutes before serving.

Pro Tips For The Best Chicken Alfredo Casserole

• Cook the pasta just until tender but firm. The pasta will continue to soften slightly in the oven, so avoid overcooking it before baking.
• Cut the chicken into small pieces. Smaller pieces spread better through the casserole and make every bite more balanced.
• Use a creamy Alfredo sauce that you enjoy. Since the sauce is a main ingredient, its flavor matters.
• Add the milk to keep the casserole creamy. Alfredo sauce can thicken as it bakes, so a little milk helps create a smoother texture.
• Let the casserole rest before serving. This helps the sauce settle and makes the pasta easier to scoop.

Storage Instructions

Store leftover chicken Alfredo casserole in an airtight container in the refrigerator for up to 3 days.

Let the casserole cool before storing it. This helps protect the texture and prevents extra moisture inside the container.

Reheating Instructions

Reheat individual portions in the microwave until hot.

You can also reheat the casserole in the oven. Place leftovers in an oven-safe dish, cover with foil, and warm at 350°F until heated through.

If the pasta looks dry, add a small splash of milk before reheating. This helps bring back the creamy texture.

Can You Freeze Chicken Alfredo Casserole?

Yes, you can freeze chicken Alfredo casserole, but cream-based pasta casseroles can become slightly softer after thawing.

For best results, let the casserole cool completely. Place it in freezer-safe containers and freeze for up to 2 months.

Thaw overnight in the refrigerator before reheating. Add a splash of milk when reheating to help the sauce become creamy again.

Nutrition Estimate

Nutrient	Amount Per Serving
Calories	460 kcal
Protein	34 g
Carbohydrates	30 g
Fat	23 g
Saturated Fat	11 g
Fiber	2 g
Sugar	3 g
Sodium	720 mg
Calcium	310 mg
Iron	2 mg

Nutrition is an estimate and can vary based on the exact Alfredo sauce, cheese, pasta, and chicken used.