If you have been yearning for that soul-soothing, creamy, and irresistibly cheesy comfort food, look no further than this Macaroni Au Gratin Recipe. It’s a wonderful twist on the classic macaroni and cheese that adds a golden, crunchy breadcrumb topping layered over a luscious, velvety cheese sauce. Every bite delivers warm, gooey goodness balanced with just the right amount of savory depth, making it a perfect dish to share with family or cozy up with any time you need a delicious pick-me-up.

Ingredients You’ll Need
The magic behind this Macaroni Au Gratin Recipe lies in the simplicity and quality of its ingredients. Each one plays a crucial role, from pasta that holds the sauce beautifully to cheeses that bring a blend of flavors, and the buttery breadcrumbs that seal the deal with a crispy finish.
- 8 oz elbow macaroni: Classic pasta shape that catches the cheese sauce perfectly.
- 3 tbsp unsalted butter: Used to create a rich roux and add buttery flavor.
- 3 tbsp all-purpose flour: Thickens the sauce to creamy perfection.
- 2 cups whole milk: Provides a luscious, smooth base for the cheese sauce.
- 1 1/2 cups shredded sharp cheddar cheese: Brings bold, tangy cheesiness.
- 1/2 cup shredded Gruyère or mozzarella cheese: Adds creaminess and gentle nuttiness or mild meltiness.
- 1/2 tsp salt: Enhances the overall flavor.
- 1/4 tsp black pepper: A subtle spicy undertone to balance richness.
- 1/2 tsp Dijon mustard (optional): Boosts depth and sharpness in the cheese sauce.
- 1/4 tsp garlic powder: Adds a hint of savory warmth.
- 1/4 tsp paprika (optional, for garnish): Sprinkles vibrant color and mild earthiness.
- 1/2 cup breadcrumbs (preferably panko for a crispy topping): Creates the irresistible crunchy topping.
- 1 tbsp unsalted butter (melted, for topping): Helps breadcrumbs brown beautifully in the oven.
How to Make Macaroni Au Gratin Recipe
Step 1: Cook the Pasta
The very first step is to get your macaroni cooked just right. Bring a large pot of salted water to a boil, then add your elbow macaroni. Cook it according to the package instructions, usually around 7-8 minutes, until it’s tender yet firm to the bite. Drain it thoroughly and set it aside so it’s ready to mingle with the luscious cheese sauce.
Step 2: Make the Cheese Sauce
In a heavy-bottomed saucepan, melt the butter over medium heat. Once melted, sprinkle in the flour and whisk continuously for about 1 to 2 minutes to cook out the raw taste and make a smooth paste called a roux. Slowly pour in the whole milk while whisking vigorously to prevent lumps from forming. Allow the mixture to come to a gentle simmer and thicken slightly, usually about 3 to 4 minutes. This silky base is what makes the sauce luxuriously creamy.
Step 3: Add the Cheese
Lower the heat to prevent overheating, then stir in the sharp cheddar and Gruyère (or mozzarella) cheeses patiently until every bit melts into the sauce. This step is where your sauce changes from simple béchamel to full-on rich and cheesy heaven. Season the sauce with salt, black pepper, Dijon mustard for a subtle tang, and garlic powder to deepen the flavor. Give everything a good stir to combine and keep the sauce smooth and luscious.
Step 4: Combine Pasta and Sauce
Pour your perfectly cooked macaroni into the cheese sauce and gently fold it in until each curled piece is coated in velvety, cheesy goodness. This is the core of your Macaroni Au Gratin Recipe, the moment when pasta and sauce become inseparable friends ready to be baked to perfection.
Step 5: Prepare the Topping
In a small bowl, mix the panko breadcrumbs with melted butter. This simple step transforms ordinary breadcrumbs into a golden, crisp topping that provides a wonderful textural contrast to the creamy pasta beneath it.
Step 6: Assemble the Casserole
Preheat your oven to 350°F (175°C). Transfer the macaroni and cheese mixture into a greased 9×9 inch or 2-quart baking dish, spreading it evenly. Then carefully sprinkle the breadcrumb mixture over the surface, ensuring a complete and even layer. For an extra pop of warmth and color, lightly dust the top with paprika if you like. This assembly stage is like setting the stage for the grand finale.
Step 7: Bake the Macaroni Au Gratin Recipe
Bake the casserole for 25 to 30 minutes or until the topping turns a gorgeous golden brown and the edges bubble enticingly. This final oven time melds all the flavors and textures into one harmonious, decadent dish you’ll be eager to dig into.
How to Serve Macaroni Au Gratin Recipe

Garnishes
To elevate the Macaroni Au Gratin Recipe even more, fresh herbs like chopped parsley or chives sprinkled on top add a bright, fresh note and a lovely color contrast. A light drizzle of truffle oil or a sprinkle of extra sharp cheese right after baking can also take this dish to next-level indulgence.
Side Dishes
This dish is hearty enough to be a meal on its own, but pairing it with crisp green salads, roasted vegetables, or a tangy tomato-based side dish beautifully balances its richness. Think along the lines of a simple arugula salad or roasted Brussels sprouts with lemon zest.
Creative Ways to Present
For an eye-catching presentation, serve the Macaroni Au Gratin Recipe in individual ramekins or mini cast iron skillets, which keeps the crispy topping intact and makes it feel a bit more special. You can also sprinkle additional fresh herbs just before serving for that final touch of color and flair.
Make Ahead and Storage
Storing Leftovers
This dish stores very well in the refrigerator for up to three days. Just cover it tightly with plastic wrap or transfer to an airtight container to keep the sauce creamy and prevent the topping from getting soggy.
Freezing
If you want to save some for later, this Macaroni Au Gratin Recipe freezes wonderfully. Freeze it before baking or after baking once cooled, wrapped well in foil and then in a freezer bag. It can be stored for up to two months.
Reheating
For the best texture, reheat leftovers in the oven at 350°F (175°C) until warmed through and the topping regains its crunch, around 15-20 minutes. If you’re in a hurry, a microwave will work but may soften the crispy top.
FAQs
Can I use different types of pasta for this Macaroni Au Gratin Recipe?
Absolutely! While elbow macaroni is traditional, you can substitute with other short pasta shapes like shells, penne, or rotini. Just ensure they hold sauce well.
What cheese works best if I don’t have Gruyère?
Mozzarella is a great milder alternative, but you could also try fontina or even Monterey Jack for melting qualities and flavor.
Can I make this dish vegan or dairy-free?
Yes! Use plant-based milk and vegan cheeses along with dairy-free butter alternatives. Keep in mind the flavor and texture may vary slightly, but still delicious.
Why do you add Dijon mustard to the cheese sauce?
Dijon mustard adds a subtle sharpness that brightens the sauce and enhances the cheesy depth without overpowering the dish.
Is it necessary to use panko breadcrumbs?
Panko breadcrumbs are preferred for their light, airy crispiness, but regular breadcrumbs can be used in a pinch. They may result in a denser topping.
Final Thoughts
This Macaroni Au Gratin Recipe is a delicious reminder of how simple ingredients combined with a little TLC can create a dish that’s both comforting and special. Whether you’re feeding a crowd or craving a cozy dinner, this casserole brings irresistible warmth, creamy texture, and a perfect golden crust. I can’t wait for you to try it and make it your new go-to comfort classic!
