Cheesy Garlic Chicken Rigatoni

The first time I made this casserole, my kitchen smelled so incredible that my neighbor actually knocked on the door to ask what I was cooking. I'd been experimenting with combining my love for garlic chicken with the comfort of baked pasta, and something magical happened in that 9x13 dish. Now it's the most requested dish at every family gathering and potluck I attend.

Last winter, during a particularly brutal snowstorm, I threw this together with ingredients I happened to have on hand. My roommate and I sat on the couch watching movies while it bubbled away in the oven, and that cozy evening has become one of my favorite kitchen memories. Something about the way the cheese creates that golden crust on top just makes a house feel like home.

Ingredients

• Rigatoni pasta (400g): The ridges and hollow centers catch sauce beautifully, though penne works in a pinch
• Chicken breasts (500g): Boneless and skinless is essential here, dice into uniform pieces for even cooking
• Salt and black pepper: Generous seasoning on the chicken prevents it from being bland in the final dish
• Olive oil (1 tbsp): Just enough to get a nice golden sear on the chicken without overwhelming the cheese sauce
• Unsalted butter (3 tbsp): Forms the foundation of your roux, control the salt level yourself
• Garlic (4 cloves): Fresh minced garlic is nonnegotiable, the flavor backbone of the entire dish
• All-purpose flour (3 tbsp): Thickens the sauce, whisk constantly to avoid lumps
• Whole milk (2 cups): Full fat makes a noticeably creamier sauce than low-fat alternatives
• Chicken broth (1 cup): Adds depth and savory notes to balance the rich cheese
• Italian seasoning (1 tsp): A convenient blend, though oregano and basil work beautifully on their own
• Crushed red pepper flakes: Even a tiny pinch adds warmth without making it spicy
• Mozzarella, sharp cheddar, and Parmesan: This trio creates the perfect balance of melt and flavor
• Fresh parsley (2 tbsp): Adds brightness and color, plus it makes the final presentation look intentional

Instructions

Get your oven ready:

Preheat to 375°F and grease your baking dish thoroughly, nothing worse than stuck-on cheese

Cook the rigatoni:

Boil until al dente, it will cook more in the oven so do not overdo it now

Sear the chicken:

Season with salt and pepper, cook in hot oil until golden and cooked through, about 7 minutes

Build the sauce base:

Melt butter and cook garlic until fragrant, then whisk in flour for 2 minutes to cook out the raw taste

Create the cheese sauce:

Slowly whisk in milk and broth, add seasonings, and simmer until thickened nicely

Melt in the cheeses:

Remove from heat before stirring in mozzarella, cheddar, and Parmesan until smooth

Combine everything:

Add chicken and rigatoni to the sauce, toss gently until every piece is coated

Assemble the casserole:

Transfer to your baking dish and scatter the remaining mozzarella across the top

Bake until golden:

20 to 25 minutes should give you bubbly edges and that gorgeous browned cheese crust

Let it rest:

Five minutes of patience helps the sauce set slightly so servings hold their shape

Save

This recipe became my go-to when my sister had her first baby and I was dropping off meals for weeks. Something about a bubbling cheese casserole just screams comfort, and new parents need all the comfort they can get. She still texts me every time she makes it, saying it saved her sanity on more than one exhausting night.

Making It Your Own

I have discovered that rotisserie chicken works beautifully here and cuts your prep time in half. Sometimes I throw in sautéed mushrooms or spinach when I want to feel slightly virtuous about serving pasta for dinner. The recipe is forgiving enough that you can play around without risking disaster.

Perfect Sides

A crisp green salad with vinaigrette cuts through all that richness beautifully. My family fights over the last piece of garlic bread on the table, but honestly the casserole is substantial enough to stand alone. Roasted broccoli or green beans add some color and nutrition to the plate.

Make Ahead Magic

You can assemble the entire casserole up to 24 hours before baking, just keep it tightly wrapped in the refrigerator. Add about 10 extra minutes to the baking time if it is cold from the fridge. I have also frozen half-baked casseroles successfully, just thaw overnight before finishing in the oven.

• Let the casserole cool completely before covering if you plan to refrigerate it
• Wrap tightly with foil to prevent the top from drying out
• Reheat covered at 350°F until hot throughout, about 20 minutes

Save

There is something so deeply satisfying about pulling a golden, bubbling casserole out of the oven. I hope this becomes one of those recipes you turn to again and again, just like I have.

Recipe FAQs

→ Can I use rotisserie chicken instead of raw chicken breasts?

Yes, rotisserie chicken works perfectly and reduces cooking time. Simply shred about 2 cups and add it during step 7 when combining with the sauce and pasta.

→ How do I store and reheat leftovers?

Store in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave with a splash of milk or in a 350°F oven covered with foil until heated through.

→ Can I make this ahead of time?

Assemble everything up to step 8, cover tightly, and refrigerate up to 24 hours before baking. You may need to add 5-10 minutes to the baking time if baking cold from the refrigerator.

→ What vegetables can I add to this dish?

Sautéed mushrooms, fresh spinach, or roasted red peppers blend well with the creamy sauce. Add vegetables during step 3 with the chicken or stir them into the sauce before combining with pasta.

→ Can I freeze this casserole?

Yes, freeze before baking. Assemble in a freezer-safe dish, wrap tightly, and freeze up to 3 months. Thaw overnight in the refrigerator before baking as directed.