Prepare the Meatballs: In a large bowl, combine the ground beef, plain breadcrumbs, egg, 2 tablespoons of chopped fresh parsley, dried oregano, garlic powder, onion powder, red pepper flakes (if using), 1 teaspoon salt, and 1/2 teaspoon black pepper. Mix gently with your hands until just combined – overmixing can lead to tough meatballs.
Roll the mixture into 1-inch to 1.5-inch meatballs. You should get approximately 24-30 meatballs.
Heat 1 tablespoon vegetable oil in a large skillet or Dutch oven over medium-high heat. Brown the meatballs in batches on all sides until nicely caramelized. They don’t need to be cooked through at this stage, just browned for flavor and texture. Remove the browned meatballs from the skillet and set aside on a plate.
Cook the Macaroni: Bring a large pot of salted water to a rolling boil. Add the elbow macaroni and cook according to package directions until al dente, about 7-8 minutes. The pasta should still have a slight bite as it will continue to cook in the oven. Drain the macaroni well and set aside.
Start the Cheese Sauce Base: In the same skillet (or a clean one if preferred) used for the meatballs, add 1 tablespoon olive oil over medium heat. Add the diced yellow onion and sauté for 5-7 minutes until softened and translucent. Add the minced garlic and cook for another minute until fragrant.
Melt 1/4 cup unsalted butter in the skillet with the onion and garlic. Once melted, sprinkle in the 1/4 cup all-purpose flour. Whisk continuously for 1-2 minutes to create a roux, cooking out the raw flour taste.
Gradually whisk in the warmed whole milk, a little at a time, ensuring no lumps form. Continue whisking until the sauce begins to thicken, about 3-5 minutes.
Stir in the Dijon mustard, smoked paprika, ground nutmeg, 1/2 teaspoon salt, and 1/4 teaspoon black pepper.
Make the Cheese Sauce: Reduce the heat to low. Add 2 cups of the shredded sharp cheddar cheese, all of the shredded Gruyere cheese, and 1/2 cup of grated Parmesan cheese to the sauce. Stir constantly until the cheeses are fully melted and the sauce is smooth and creamy. Taste and adjust seasonings as needed. If the sauce seems too thick, you can add a splash more warm milk.
Combine and Assemble: Add the cooked and drained macaroni to the cheese sauce. Stir gently to ensure all the pasta is thoroughly coated.
Pour half of the macaroni and cheese mixture into the prepared 9×13-inch baking dish.
Arrange the browned meatballs evenly over the macaroni and cheese layer.
Spoon the remaining macaroni and cheese mixture over the meatballs, spreading it out to cover them as much as possible.
In a small bowl, combine the remaining 1 cup shredded sharp cheddar cheese with the 1/2 cup panko breadcrumbs. Sprinkle this mixture evenly over the top of the casserole.
Bake the Casserole: Place the baking dish in the preheated oven. Bake for 25-30 minutes, or until the casserole is bubbly around the edges and the topping is golden brown.
Rest and Serve: Once baked, remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the sauce to set slightly, making it easier to serve.
Garnish with the remaining fresh chopped parsley before serving, if desired.
Cooking Tips and Variations
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For the ultimate flavor, consider making your meatballs from scratch using a blend of ground beef and ground pork for extra juiciness and depth. If you’re short on time, don’t hesitate to use high-quality frozen cooked meatballs – just ensure they are thawed and slightly browned for best results. When browning your meatballs, resist the urge to overcrowd the pan; cook them in batches to achieve a beautiful sear and prevent steaming. This browning step is crucial for developing rich flavor that truly elevates the casserole.
The cheese sauce is the heart of this dish, so don’t be afraid to experiment with your favorite cheese blends. While sharp cheddar and Gruyere provide a fantastic balance of tang and nuttiness, you could also incorporate smoked Gouda for a smoky note, Monterey Jack for extra meltiness, or even a touch of cream cheese for an even richer, silkier sauce. Remember to grate your own cheese from blocks; pre-shredded cheeses often contain anti-caking agents that can make your sauce less smooth. For the pasta, cooking it slightly al dente is key, as it will continue to absorb liquid and cook further in the oven. Overcooked pasta will become mushy in the casserole.
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To enhance the overall flavor profile, consider adding a dash of Worcestershire sauce to your cheese sauce for an umami boost, or a pinch of cayenne pepper for a subtle kick. A tablespoon of tomato paste stirred into the roux can also add a nice depth of flavor. For added nutrition and texture, sauté some finely diced bell peppers, mushrooms, or spinach with the onions before adding the butter and flour for the roux. These vegetables will cook down nicely and blend seamlessly into the dish. If you prefer a crunchier topping, mix additional Parmesan cheese with the panko breadcrumbs and even a drizzle of melted butter before sprinkling over the casserole. For a truly decadent finish, a sprinkle of crispy fried onions or bacon bits can be added during the last few minutes of baking.
This casserole is a complete meal on its own, but it pairs wonderfully with a simple green salad dressed with a light vinaigrette to cut through the richness. A side of crusty garlic bread is also a fantastic accompaniment for soaking up every last bit of that delicious cheese sauce. For a lighter touch, steamed green beans or roasted asparagus would complement the dish beautifully. Don’t forget a sprinkle of fresh herbs, like more chopped parsley or chives, just before serving to add a pop of color and freshness.
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Storage and Reheating
This Ultimate Baked Meatball and Macaroni Casserole is fantastic for meal prep or enjoying leftovers, as the flavors tend to meld and deepen over time. To store, allow the casserole to cool completely to room temperature. Once cooled, cover the baking dish tightly with plastic wrap and then aluminum foil, or transfer individual portions to airtight containers. The casserole can be stored in the refrigerator for up to 3-4 days.
