Start by boiling a large pot of salted water.

In a medium saucepan, melt the butter over medium heat.

Stir in the flour and cook for about 1 minute, whisking constantly.

Gradually whisk in the milk until the mixture is smooth and free of lumps.

Once the milk is heated, stir in the shredded cheese until melted and smooth.

Add salt, pepper, and paprika to taste.

Drain the cooked pasta and return it to the pot. Pour the cheese sauce over the pasta and mix well to combine.

You can serve it straight from the pot or transfer it to an oven-safe baking dish and broil for a crispy top.