Chicken Bacon Ranch Casserole is the kind of dinner I recommend when you already have cooked chicken on hand and want to turn it into something more substantial. Penne pasta, creamy Alfredo sauce, ranch dressing, bacon, and mozzarella all go into one 9×13-inch pan, so the actual assembly is quick.
What makes this casserole work is the balance between the Alfredo and ranch. The Alfredo gives the pasta enough creamy sauce to stay moist in the oven, while the ranch adds tang and seasoning without needing a long list of spices.
I also like that the chicken and bacon are already cooked before assembly. We are really using the oven to heat the casserole through and melt the cheese rather than asking several raw ingredients to finish at the same time.
A Good Use for Cooked Chicken
This recipe needs 2 cups of shredded cooked chicken. Leftover roasted or baked chicken works well, and rotisserie chicken is a convenient shortcut. I recommend removing skin and bones before measuring so the chicken distributes evenly through the pasta.
Because the chicken is already cooked, avoid baking the casserole much longer than necessary. Extended baking can dry out the chicken and pull moisture from the pasta.
Ingredients
- 1 pound penne pasta, cooked and drained
- 2 cups shredded cooked chicken
- 1 (15-ounce) jar Alfredo pasta sauce
- 1/2 cup ranch dressing
- 6 slices bacon, cooked and chopped
- 2 cups shredded mozzarella cheese (8 ounces)
- Chopped parsley, optional for serving
How I Keep the Pasta Creamy
The pasta will continue absorbing sauce while it bakes, so I would not cook the penne until it is falling-soft before it goes into the casserole. Cook it until tender but still able to hold its shape, drain it well, and combine it with the sauce while the pasta is still easy to toss.
Do not rinse the pasta after cooking. The starch left on the surface helps the Alfredo-ranch mixture cling to the noodles instead of collecting at the bottom of the baking dish.
How to Make Chicken Bacon Ranch Casserole
- Preheat the oven to 350°F. Grease or lightly spray a 9×13-inch baking dish.
- Cook the penne according to the package directions until tender but not overly soft. Drain well.
- In a large bowl, combine the cooked penne, shredded cooked chicken, Alfredo sauce, and ranch dressing.
- Stir until the pasta and chicken are evenly coated, then spread the mixture in the prepared baking dish.
- Sprinkle the chopped cooked bacon over the top.
- Cover evenly with the shredded mozzarella.
- Bake for 15 to 20 minutes, or until the casserole is hot throughout and the cheese is fully melted and bubbling around the edges.
- Let it stand for about 5 minutes before serving. Finish with chopped parsley if you want a little fresh color.
Getting the Sauce Balance Right
Ranch dressing is flavorful, so more is not automatically better. The original 1/2-cup amount gives the casserole noticeable ranch flavor while the Alfredo still behaves like the main pasta sauce.
If your Alfredo sauce is especially thick, toss the pasta thoroughly before deciding whether the mixture needs any adjustment. I would rather start with the published proportions than add extra liquid that could make the casserole loose.
Make-Ahead Option
You can assemble the casserole earlier in the day, cover it, and refrigerate it before baking. Because a cold casserole takes longer to heat than one assembled with warm pasta, allow extra oven time and make sure the center is heated through before serving.
For the best texture, I prefer adding the final cheese and bacon close to baking time rather than leaving them uncovered in the refrigerator.
What to Serve With It
This is a rich pasta casserole, so simple sides work best. A crisp green salad, roasted broccoli, green beans, or another lightly seasoned vegetable gives the meal some contrast.
For more dinner ideas, browse our casserole recipes and chicken recipes.
Leftovers and Reheating
Store leftovers in a covered container in the refrigerator. Reheat only the amount you plan to eat so the chicken and pasta are not repeatedly heated and cooled.
For individual portions, the microwave is convenient. For a larger amount, cover the casserole and warm it in the oven until heated through; covering helps reduce moisture loss while reheating.
A Few Useful Swaps
Pasta: Another short pasta such as rigatoni or rotini can work if it holds sauce well.
Chicken: Cooked turkey can replace the chicken when you have holiday leftovers.
Cheese: Mozzarella gives a mild, stretchy topping. A small amount of cheddar can add sharper flavor, but I would keep mozzarella as the main cheese if you want the same creamy profile as the original.
