This chicken Alfredo bake offers a comforting, restaurant-style meal right in your own kitchen with minimal effort. By combining tender chicken, perfectly cooked pasta, and a rich, creamy homemade sauce, this casserole is the ultimate weeknight dinner solution that feeds a hungry crowd.

List of ingredients
- 12 oz penne pasta
- 3 cups diced or shredded rotisserie chicken
- 3 tbsp butter
- 2 tbsp flour
- 2 garlic cloves, minced
- 2 cups milk
- 1 cup heavy cream
- 1 tsp dry oregano
- 2 tsp dry parsley
- 1 tsp red pepper flakes
- ½ tsp salt
- Freshly ground black pepper to taste
- ¾ cup Parmesan cheese, freshly grated
- 2 cups mozzarella cheese, freshly shredded and divided
- Cooking spray
- 1-2 tbs freshly chopped parsley for serving
step-by-step instructions
- Step: Spray a 3-quart baking dish with cooking spray, and preheat the oven to 350 F.
- Step: Cook the pasta until al dente according to package instructions, drain, and keep warm.
- Step: While the pasta is cooking, make the sauce: melt the butter in a large pan and saute the garlic. Add the flour and cook until slightly golden brown. Whisk in the milk and cream until no lumps remain, and cook until thickened. Stir in the Parmesan cheese, ½ cup mozzarella cheese, oregano, parsley, red pepper flakes, salt, and pepper until the cheeses are melted.
- Step: Add the cooked pasta and diced chicken, and mix until well combined. Pour into the prepared baking dish, top with the remaining mozzarella cheese, and bake, uncovered, for 20-25 minutes or until the cheese is melted and bubbly. Serve with freshly chopped parsley on top.
Refining your creamy sauce
Maintaining the correct temperature
When preparing the roux and adding the dairy, it is crucial to keep the heat at a steady medium level. If the burner is set too high, the milk and cream may scald or the flour might burn, resulting in an unpleasant charred taste. Constantly whisking ensures the sauce remains smooth and uniform throughout the thickening process.
Achieving the ideal thickness
The sauce should reach a consistency similar to heavy gravy before the pasta is added. If you find your sauce is becoming too thick while whisking, simply add a splash more milk to adjust the texture. Keep in mind that the pasta will continue to absorb some of the liquid while it is in the oven, so having a slightly looser sauce is better than a dry one.
Practical preparation pointers
The importance of al dente pasta
Always cook your penne until it is just al dente, which means it should still have a slight bite in the center. Since the pasta will undergo further cooking in the oven surrounded by hot sauce, overcooking it in the boiling water will result in mushy, textureless noodles. Draining the pasta thoroughly is also key to preventing excess water from diluting your rich Alfredo sauce.
Selecting the right cheese
For the best results, use a block of Parmesan and a block of mozzarella and grate them yourself at home. Pre-shredded varieties often contain cellulose or other anti-caking agents that can leave a powdery residue and prevent the cheese from melting into a smooth, cohesive layer. Grated-at-home cheese guarantees a superior stretch and a much deeper flavor profile in every bite.
Creative variations and adjustments
Integrating hearty vegetables
You can easily turn this into a one-pan nutritional powerhouse by folding in pre-cooked vegetables. Steamed broccoli florets, sautéed bell peppers, or roasted mushrooms work exceptionally well with the creamy sauce. Always ensure vegetables are cooked and drained of any excess liquid before tossing them in, as extra water can make the casserole watery.
Adding texture to your bake
If you prefer a bit of crunch, consider topping your casserole with a light dusting of toasted breadcrumbs mixed with a tiny bit of melted butter. Sprinkle these on top during the last five minutes of the baking cycle to achieve a golden, toasted crust without burning the mozzarella underneath. This adds a nice contrast to the soft, creamy pasta below.
Storage and reheating strategy
Managing leftovers effectively
Leftovers should be stored in an airtight container in the refrigerator to keep the sauce from drying out. They will generally stay fresh for up to three days, but keep in mind that the pasta will continue to hydrate from the sauce while sitting in the fridge. This means the leftovers might appear slightly thicker or dryer when you are ready to eat them again.
Refreshing the dish during reheating
When reheating in the microwave, add a tablespoon of water or milk to the portion before heating to help loosen the sauce. If using the oven, cover the baking dish with foil and heat it at 350 F for about twenty minutes. This steaming effect helps the sauce regain its creamy consistency without scorching the edges of the pasta or over-browning the cheese.
Common kitchen questions
Can I use a different type of pasta?
Yes, you can substitute the penne with any other short, hearty pasta shape. Rigatoni, fusilli, or farfalle are excellent choices because they have folds and ridges that trap the creamy Alfredo sauce, ensuring every forkful is flavorful. Avoid very long, thin noodles like spaghetti or linguine as they tend to tangle and do not bake as evenly in a casserole format.
What if I do not have rotisserie chicken?
You can easily use any cooked chicken you have on hand, such as poached or baked chicken breast. If you have plain cooked chicken, consider tossing it with a little bit of salt and pepper or a pinch of herbs before adding it to the sauce to boost the flavor. Using leftover grilled chicken also adds a subtle smoky note that complements the richness of the cheese.
Why is my sauce separating?
Separation often occurs if the sauce is heated too rapidly or if the cheese is added while the pan is at an extremely high temperature. To prevent this, reduce the heat to low before whisking in the cheese, and do it gradually to allow it to emulsify properly with the milk and cream. If the sauce does happen to separate, a quick whisk with a splash of cold milk can sometimes bring the emulsion back together.
How can I make the dish in advance?
You can fully assemble the casserole, cover it with plastic wrap or foil, and refrigerate it for up to 24 hours before baking. If you are baking it cold from the refrigerator, you may need to add five to ten minutes to the total baking time to ensure the center is heated through. It is a perfect solution for busy weeknights when you want dinner ready to go.
Print
Quick & Easy Chicken Alfredo Bake
- Total Time: 40 minutes
- Yield: 8 servings 1x
- Diet: Non-Vegetarian
Description
Transform your favorite Alfredo pasta into a creamy casserole that comes together in 40 minutes with this Quick & Easy Chicken Alfredo Bake!
Ingredients
- 12 oz penne pasta
- 3 cups diced or shredded rotisserie chicken
- 3 tbsp butter
- 2 tbsp flour
- 2 garlic cloves, minced
- 2 cups milk
- 1 cup heavy cream
- 1 tsp dry oregano
- 2 tsp dry parsley
- 1 tsp red pepper flakes
- ½ tsp salt
- Freshly ground black pepper to taste
- ¾ cup Parmesan cheese, freshly grated
- 2 cups mozzarella cheese, freshly shredded and divided
- Cooking spray
- 1–2 tbs freshly chopped parsley for serving
Instructions
- Step: Spray a 3-quart baking dish with cooking spray, and preheat the oven to 350 F.
- Step: Cook the pasta until al dente according to package instructions, drain, and keep warm.
- Step: While the pasta is cooking, make the sauce: melt the butter in a large pan and saute the garlic. Add the flour and cook until slightly golden brown. Whisk in the milk and cream until no lumps remain, and cook until thickened. Stir in the Parmesan cheese, ½ cup mozzarella cheese, oregano, parsley, red pepper flakes, salt, and pepper until the cheeses are melted.
- Step: Add the cooked pasta and diced chicken, and mix until well combined. Pour into the prepared baking dish, top with the remaining mozzarella cheese, and bake, uncovered, for 20-25 minutes or until the cheese is melted and bubbly. Serve with freshly chopped parsley on top.
Notes
You can assemble the dish ahead of time, cover it, and refrigerate until ready to bake. If the pasta absorbs the sauce, add a splash of milk before reheating. To reheat leftovers, cover with foil and bake at 350 F for 20 minutes, or microwave for 1-2 minutes.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 649 kcal
- Sugar: 4 g
- Sodium: 572 mg
- Fat: 36 g
- Saturated Fat: 18 g
- Unsaturated Fat: 12 g
- Trans Fat: 0 g
- Carbohydrates: 42 g
- Fiber: 1 g
- Protein: 41 g
- Cholesterol: 71 mg