Macaroni Gratin

Bring a large pot of salted water to a boil.
Add the macaroni pasta and cook according to the package instructions until al dente.
Drain the pasta and set it aside.

In a medium saucepan, melt the butter over medium heat.
Stir in the flour to create a smooth paste (roux). Cook for 1-2 minutes, stirring constantly.
Gradually add the milk, whisking continuously to avoid lumps.
Cook the sauce over medium heat, stirring constantly until it thickens and comes to a simmer.
Reduce the heat to low and simmer for a few more minutes, stirring occasionally.
Remove the saucepan from heat and stir in the grated cheddar and Gruyère cheeses until they are fully melted and the sauce is smooth.
Season the cheese sauce with salt, pepper, ground nutmeg, and paprika (if using). Adjust the seasonings to taste.

Preheat your oven to 180°C (350°F).
Add the cooked macaroni to the cheese sauce and stir to coat the pasta evenly with the sauce.

Transfer the macaroni and cheese mixture to a greased ovenproof baking dish.
Sprinkle the breadcrumbs evenly over the top.
Bake in the preheated oven for about 25 minutes or until the top is golden brown, and the macaroni gratin is bubbly and heated through.

Remove from the oven and let it cool for a few minutes before serving.
Garnish with fresh parsley if desired.
Serve your delicious macaroni gratin as a side dish or a main course.
Enjoy your homemade Macaroni Gratin!