This creamy Chicken Spaghetti is a delicious and hearty baked spaghetti casserole. It’s so simple to make, perfect for an easy weeknight meal. Made with simple ingredients and with a wonderfully crunchy, cheesy topping, this dish is pure comfort food.

What’s in this Chicken Spaghetti Recipe?

This Chicken Spaghetti will hit the spot any day of the week! It’s a super satisfying main dish, and a breeze to whip up. Succulent chicken mixed with a creamy sauce, all topped with a layer crunchy cheesy goodness – so good! It’s one of my family’s favorite chicken casseroles!

• Breadcrumbs: Make the topping crunchy. You can also use crushed crackers.
• Unsalted Butter: Helps bind the topping together.
• Dried Basil: Adds a pop of Italian flavor to the topping.
• Kosher Salt: Enhances the natural flavor of both the topping and the casserole.
• Cheese: Adds creaminess to the casserole and cheesiness to the topping.
• Olive Oil: Helps the onion and garlic cook without burning.
• Onion + Garlic: Add an earthy and sweet flavor to the casserole.
• Chicken Broth: Adds moisture and flavor.
• Water: Adds moisture without increasing the sodium or fat content further.
• Black Pepper: Adds a slightly spicy flavor.
• Spaghetti: Cut it into thirds so it’s easier to scoop!
• Fresh Basil: Adds a fresh flavor and a pop of color.
• Diced Tomatoes and Green Chilies: Adds an acidic tomato flavor and makes this casserole a touch spicy.
• Cream of Mushroom Soup: Adds richness, creaminess, and umami flavor.
• Shredded Cooked Chicken: An easy way to use up leftovers from another meal!

Pro Tip: You can use wholewheat pasta. Just make sure you allow a bit of extra time for it to cook to make sure the pasta is done.

Variations on Chicken Spaghetti Casserole

It’s easy to modify this casserole to suit your tastes. As is, it has a bit of a Mexican flair. If you’d like to make it more Italian-style, use an Italian cheese blend, and swap out the diced tomatoes and green chilies for regular diced tomatoes or fire-roasted diced tomatoes. This will also make the casserole less spicy.

For a spicier casserole, opt for a spicy cheese blend, like habanero cheddar, and add chopped jalapeños!