Few dinners deliver the kind of instant comfort you get from a creamy cheesy baked casserole pulled straight from the oven, cheese still bubbling at the edges. This version layers tender penne pasta and juicy shredded chicken in a velvety homemade cheese sauce, then bakes under a thick blanket of mozzarella, cheddar, and parmesan until the top turns deep golden brown. I've made this exact baked casserole more times than I can count for busy weeknights, potlucks, and lazy Sunday dinners, and it disappears every single time.
What makes this creamy cheesy baked casserole recipe so reliable is that it uses one skillet for the sauce and one baking dish for the oven, so cleanup stays simple even with all that cheese. You'll get a crisp, golden crust on top and a creamy, saucy interior underneath, exactly like the one you see sliced open with melted cheese stretching away from the spoon. Whether you're feeding a hungry family or prepping lunches for the week, this bake holds up beautifully.
| Detail | Info |
|---|---|
| Prep Time | 20 minutes |
| Cook Time | 35 minutes |
| Total Time | 55 minutes |
| Servings | 8 |
| Cuisine | American |
| Course | Main Dish |
| Cooking Method | Baking |
| Calories | 480 kcal per serving |
| Difficulty | Easy |
For the Pasta & Chicken:
For the Creamy Cheese Sauce:
For the Cheese Topping:
Optional Add-Ins:
Substitution Table:
| Ingredient | Substitute | Notes |
|---|---|---|
| Penne pasta | Rotini or ziti | Any short pasta holds sauce well |
| Rotisserie chicken | Ground turkey, browned | Adds different texture, still works |
| Whole milk | 2% milk + 1 tbsp butter | Keeps sauce from thinning too much |
| Cream cheese | Mascarpone or sour cream | Slightly tangier finish |
| Mozzarella | Monterey Jack | Melts just as smoothly |
1. Preheat and prep the dish.
Preheat your oven to 375°F and grease a 9x13-inch baking dish with butter or nonstick spray. This step matters more than it seems, since a well-greased dish keeps the cheesy edges from fusing to the pan during baking. Have your dish ready before you start the sauce so the casserole goes straight from stovetop to oven.
2. Cook the pasta just shy of done.
Bring a large pot of salted water to a boil and cook the penne about 2 minutes less than the package directs, until just shy of al dente. Drain well and set aside. The pasta will keep absorbing sauce as the casserole bakes, so slightly undercooking it here prevents a mushy final texture.
3. Build the creamy cheese sauce.
Melt the butter in a large skillet over medium heat, then whisk in the flour and cook for 1 minute until it smells lightly toasted. Slowly whisk in the milk and chicken broth, stirring constantly until the sauce thickens and small bubbles appear around the edges, about 4 to 5 minutes. Stir in the cream cheese, garlic, onion powder, Italian seasoning, salt, and pepper until completely smooth.
4. Combine and assemble the casserole.
Fold the drained pasta, shredded chicken, and 1 cup of mozzarella into the warm sauce until fully coated. Pour the mixture into your prepared baking dish and spread it into an even layer with a spatula. Scatter the remaining mozzarella, cheddar, and parmesan evenly over the top so every bite gets a cheesy crust.
5. Bake covered first.
Cover the dish tightly with foil and bake at 375°F for 20 minutes, until the sauce is visibly bubbling around the edges. Since the chicken is already cooked, this stage is mainly about heating the casserole through; check that the center reaches at least 165°F with an instant-read thermometer per USDA food safety guidelines. Resist peeking too often, since every time the door opens, the oven loses heat and bake time stretches.
6. Finish uncovered for a golden top.
Remove the foil and continue baking uncovered for 10 to 15 minutes, until the cheese is deeply golden brown, bubbling, and slightly crisp at the edges. You'll notice the aroma of toasted cheese fill the kitchen right around the 10-minute mark, which is a reliable cue it's nearly ready. This two-stage bake is exactly what separates a creamy cheesy baked casserole with a soggy top from one with real texture contrast.
7. Rest before serving.
Pull the casserole out and let it rest on the counter for 5 to 10 minutes before scooping. This short rest allows the sauce to settle so slices hold together instead of running across the plate. For a flavor pairing idea, this casserole works nicely alongside Cheesy Ground Beef Potato Casserole (Best 1-Pan Bake) for a true comfort-food spread.
Healthy Variation: Swap half the pasta for extra steamed broccoli or cauliflower florets, and use 2% milk instead of whole milk in the sauce. This cuts calories while still keeping the dish satisfying and creamy, since the vegetables soak up the cheese sauce just as well as pasta does.
Vegetarian Variation: Skip the chicken entirely and double the peas, broccoli, and a drained can of white beans for protein. Use vegetable broth in place of chicken broth so the sauce base stays fully meat-free without losing its savory depth.
Spicy Variation: Stir in 1/4 teaspoon cayenne pepper plus the optional red pepper flakes directly into the cheese sauce, and top with pepper jack instead of half the mozzarella. The heat builds slowly in the background rather than overpowering the creamy base.
Gluten-Free Variation: Use a gluten-free penne and substitute the all-purpose flour in the sauce with an equal amount of cornstarch, whisked in cold milk first. The texture stays just as thick and creamy, though you should bake slightly less time since gluten-free pasta softens faster.
Low-Carb/Keto Variation: Replace the pasta with steamed cauliflower florets or cooked spaghetti squash, and reduce the flour in the sauce by using 2 teaspoons xanthan gum instead. This keeps the dish rich and cheesy while dramatically cutting the carb count per serving.
Let leftovers cool to room temperature for no more than two hours before storing, as recommended by general food safety guidance. Store the creamy cheesy baked casserole in an airtight container in the refrigerator, where it stays fresh for 3 to 4 days. For longer storage, portion cooled casserole into freezer-safe containers and freeze flat for easier stacking and faster thawing later.
Thaw frozen portions overnight in the refrigerator before reheating for the best texture. Avoid refreezing thawed casserole, as the pasta can become noticeably softer with each freeze-thaw cycle. Labeling containers with the date helps you track freshness, especially if you're prepping multiple freezer meals at once.
| Storage Method | Duration | Container |
|---|---|---|
| Refrigerator | 3–4 days | Airtight container |
| Freezer | Up to 2 months | Freezer-safe, airtight container |
| Room Temperature | Up to 2 hours | Covered dish |
Oven: Place the desired portion in an oven-safe dish, cover with foil, and reheat at 350°F for 20 to 25 minutes, or until the center reaches 165°F, per USDA reheating guidance. This method best preserves the original texture of the baked casserole.
Microwave: Heat individual portions on a microwave-safe plate in 60-second intervals, stirring between each, until hot throughout, usually 2 to 3 minutes total. Add a splash of milk before reheating if the sauce has thickened too much in the fridge.
Stovetop: Warm portions in a covered skillet over medium-low heat with a splash of milk or broth, stirring occasionally for about 8 to 10 minutes. This method works especially well for smaller portions and helps loosen the sauce back to its original creamy consistency.
| Nutrient | Per Serving (approx.) |
|---|---|
| Calories | 480 kcal |
| Protein | 29 g |
| Carbohydrates | 38 g |
| Fat | 23 g |
| Saturated Fat | 12 g |
| Fiber | 2 g |
| Sodium | 690 mg |
Nutrition values are estimates calculated using standard ingredient databases and may vary based on specific brands, exact measurements, and portion sizes used. This information is provided for general reference only and should not replace guidance from a registered dietitian or healthcare provider, especially for those managing specific dietary conditions.
Can I assemble this casserole ahead of time?
Yes, assemble the full casserole, cover tightly, and refrigerate up to 24 hours before baking. Add about 5 to 10 extra minutes to the covered bake time since it will start from cold.
Can I make this baked casserole in a slow cooker instead?
You can cook the components on low for 2 to 3 hours, but you won't get the signature golden, crisp cheese top that baking produces. For the best texture shown in this recipe, baking remains the better method.
Why did my cheese sauce turn grainy?
This usually happens when cream cheese is added to sauce that's still at a rolling boil. Let the sauce cool slightly off heat before stirring in the cream cheese for a smooth finish.
Can I use a different pasta shape?
Absolutely, rotini, ziti, or shells all work well in this creamy cheesy baked casserole since their shapes hold the sauce effectively. Just adjust boiling time according to the package.
How do I know when the casserole is fully baked?
Look for bubbling sauce around the edges and a deeply golden, slightly crisp cheese top. An instant-read thermometer inserted into the center should also read at least 165°F.
Can I freeze this before baking it?
Yes, assemble everything except the final cheese topping, wrap tightly, and freeze unbaked for up to 2 months. Thaw overnight in the fridge, add the cheese topping, then bake as directed, adding about 10 extra minutes.
What's the best cheese combination for the top?
Mozzarella provides stretch, cheddar adds sharp flavor, and parmesan brings a nutty, savory edge. Using all three together creates the layered cheese pull seen in the photos.
Can I double this recipe for a larger crowd?
Yes, double all ingredients and bake in two 9x13-inch dishes rather than one oversized pan. This ensures even heat distribution and consistent browning on top.
Is this casserole very spicy?
No, the base recipe is mild and family-friendly, with heat only added if you include the optional red pepper flakes or cayenne. It's easy to adjust up or down to taste.
Can I use rotisserie chicken straight from the store?
Yes, store-bought rotisserie chicken works perfectly and actually saves significant prep time. Just make sure to remove the skin and shred the meat before mixing it in.
This creamy cheesy baked casserole combines tender pasta, shredded chicken, and a from-scratch cheese sauce under a golden, bubbling cheese crust. It bakes in two stages, covered then uncovered, which guarantees a fully heated center and a crisp, deeply browned top every time. The recipe comes together in under an hour, feeds eight people generously, and holds up well for leftovers or freezer meals. It's a dependable, crowd-pleasing dinner built around simple pantry ingredients and one straightforward baking method.
There's a reason a good creamy cheesy baked casserole stays in regular dinner rotation long after the first try. It's forgiving, endlessly adaptable, and delivers that satisfying cheese-pull moment every single time it comes out of the oven. Once you've nailed the covered-then-uncovered baking technique, you'll find yourself reaching for this recipe whenever you need something warm, filling, and genuinely easy to pull off on a weeknight. Give it a try this week, and don't be surprised when it becomes a permanent fixture in your dinner lineup.
Few dinners deliver the kind of instant comfort you get from a creamy cheesy baked casserole pulled straight from the oven, cheese still bubbling at the edges. This version layers tender penne pasta and juicy shredded chicken in a velvety homemade cheese sauce, then bakes under a thick blanket of mozzarella, cheddar, and parmesan until the top turns deep golden brown. I've made this exact baked casserole more times than I can count for busy weeknights, potlucks, and lazy Sunday dinners, and it disappears every single time.
Servings 8
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.