Boil a large pot of water on high heat. Add pasta and cook until al dente, about 8 minutes. Drain and set aside.

Melt butter for mac and cheese in a large pot or skillet (one that will fit all the pasta later) over medium heat. Sauté garlic until fragrant, about 1 minute. Whisk in flour. Gradually pour half and half, then milk in, whisking constantly. Continue to whisk constantly until sauce thickens, about 10-12 minutes.

Add mustard, cayenne pepper, nutmeg and salt. Gradually whisk in cheese until completely melted. Turn off heat and whisk in the egg yolk. Gradually stir in pasta and then set aside.

Preheat oven to 350 degrees F.

In a large skillet melt butter for breadcrumbs over medium heat. Stir in breadcrumbs and toast, stirring constantly until golden brown, about 5-10 minutes. Remove from heat and add salt and pepper to taste.

Divide mac and cheese evenly into mini muffin tins, pressing down on each one. Sprinkle with bread crumbs. Bake until golden brown and heated through, about 10 minutes.

Let sit in muffin tin until they can maintain their shape, about 10 minutes. Sprinkle with optional parsley and paprika. Enjoy!