Cheesy Garlic Chicken Rigatoni

The smell of garlic butter hitting a hot skillet still pulls me back to my tiny first apartment, where I discovered that comfort food does not need hours of work to taste like it does. This casserole came together on a rainy Tuesday when I needed something that felt like a hug but used ingredients I already had in the fridge. Now it is the dish I make when friends need cheering up or when the week has been too long and too exhausting.

I once doubled this recipe for a potluck and watched people circle the buffet table three times before diving in. Someone asked for the recipe before they even finished their first bite. That night taught me that simple ingredients treated with care become something people remember.

Ingredients

• 400 g (14 oz) rigatoni pasta: The ridges and tube shape hold onto the creamy sauce perfectly, but penne works in a pinch
• 500 g (1.1 lbs) boneless skinless chicken breasts diced: Cutting the chicken into small pieces ensures every bite has protein and the meat cooks through quickly
• 1 tsp salt and ½ tsp black pepper: Season the chicken generously before cooking because the pasta absorbs flavor too
• 1 tbsp olive oil: Just enough to coat the pan and get a nice golden sear on the chicken
• 3 tbsp unsalted butter: The foundation of your sauce, so use real butter for the best flavor
• 4 cloves garlic minced: Do not be shy with the garlic, it mellows beautifully in the cream sauce
• 3 tbsp all-purpose flour: This thickens the sauce, so measure accurately for the right consistency
• 2 cups (480 ml) whole milk: Whole milk makes the sauce rich and creamy without being too heavy
• 1 cup (240 ml) chicken broth: Adds savory depth that complements the Italian seasoning
• 1 tsp Italian seasoning: A blend of dried herbs that saves you from measuring out oregano, basil, and thyme separately
• ½ tsp crushed red pepper flakes: Optional but recommended if you like a gentle warmth in the background
• 1 cup (100 g) shredded mozzarella cheese: Melts into gooey perfection and stretches beautifully
• 1 cup (100 g) shredded sharp cheddar cheese: The sharpness cuts through the richness and adds depth
• ½ cup (50 g) grated Parmesan cheese: Adds a salty, nutty finish that makes the sauce taste restaurant quality
• ½ cup (50 g) shredded mozzarella cheese: Extra for the topping because that golden bubbly crust is everyone favorite part
• 2 tbsp chopped fresh parsley: Adds a bright pop of color and freshness against all that cheese

Instructions

Get your oven ready:

Preheat to 375°F (190°C) and grease a 9x13-inch baking dish with butter or cooking spray so nothing sticks later.

Cook the pasta:

Boil the rigatoni in salted water until al dente, then drain immediately so it does not get mushy.

Sear the chicken:

Season the diced chicken with salt and pepper, then cook in hot olive oil until golden and cooked through, about 5 to 7 minutes.

Start the sauce base:

Melt butter in the same skillet and cook the minced garlic for just 1 minute until fragrant, then stir in flour for another minute.

Build the cream sauce:

Whisk in the milk and chicken broth gradually, then add Italian seasoning and red pepper flakes and let it simmer until thickened.

Melt in the cheese:

Remove from heat and stir in the mozzarella, cheddar, and Parmesan until completely smooth and incorporated.

Combine everything:

Add the cooked chicken and rigatoni to the sauce and toss until every piece is evenly coated.

Assemble the casserole:

Transfer the mixture to your prepared baking dish and sprinkle the remaining mozzarella evenly over the top.

Bake until golden:

Bake for 20 to 25 minutes until the cheese is bubbling and starting to turn golden in spots.

Let it rest:

Garnish with fresh parsley if you like and let the casserole sit for 5 minutes before serving so it sets slightly.

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My sister claimed she did not like casseroles until she tried this one and asked for the recipe before leaving the table. Now she makes it for her family and sends me pictures of the empty pan every time.

Make It Your Own

Rotisserie chicken works beautifully here and cuts the prep time down to almost nothing. Just skip the searing step and add the shredded chicken directly to the sauce.

Add More Vegetables

Sautéed mushrooms, fresh spinach, or roasted red peppers fold right into the sauce before baking. They add color and make the dish feel a little lighter without sacrificing comfort.

Serving Suggestions

A crisp green salad with a vinaigrette cuts through the richness perfectly. Garlic bread might seem like overkill, but nobody has ever complained about having too much garlic bread at the table.

• Crushed red pepper flakes on the table let everyone adjust their own heat level
• Extra Parmesan for passing around makes everything feel more special
• A glass of white wine pairs beautifully if you are serving adults

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This casserole is what weeknight dreams are made of, simple enough for Tuesday but impressive enough for company.

Recipe FAQs

→ Can I make this ahead of time?

Yes, assemble the casserole up to 24 hours in advance and refrigerate before baking. You may need to add 5-10 minutes to the baking time if baking cold from the refrigerator.

→ What other pasta shapes work well?

Penne, ziti, or fusilli are excellent alternatives that hold the creamy sauce beautifully. Avoid delicate shapes like angel hair or spaghetti.

→ Can I freeze leftovers?

Leftovers freeze well for up to 3 months. Portion into airtight containers and thaw overnight in the refrigerator before reheating at 350°F until heated through.

→ How do I reheat without drying it out?

Cover with foil and reheat at 350°F for 15-20 minutes, or microwave individual portions with a splash of milk to restore creaminess.

→ Can I use rotisserie chicken?

Absolutely. Shredded rotisserie chicken works perfectly and saves about 10 minutes of prep time. Use about 3 cups of shredded meat.

→ What vegetables can I add?

Sautéed mushrooms, spinach, broccoli, or roasted red peppers mix in beautifully. Add them during step 7 when combining the sauce with pasta and chicken.