Cook the Pasta: Preheat oven to 350 degrees. Line a 12-count muffin tin with paper liners and set aside. In a deep pot or saucepan, bring water to a boil, then add the pasta and cook just shy of al dente (about 6-7 minutes) and drainOptional: Save about ½ cup of pasta liquid to use later. water, 1 pound uncooked macaroni shells
Prep the Cheese: Meanwhile, use hand grater or food processor to shred the cheese. Separate ½ cup of the cheese and set aside.
2 ½ cups sharp cheddar
Make the Cheese Sauce: Melt butter in a skillet over medium heat. Stir in flour to form a roux and cook for about one minute. Slowly whisk in milk until incorporated. Bring mixture to a boil then reduce heat and simmer until thickened (about five minutes), stirring occasionally. Remove from heat.
6 tablespoons butter, 2 tablespoons flour, 2 cups milk
Stir in mustard and season with sea salt and black pepper to taste. Stir in parmesan cheese and 2 cups of cheddar cheese until sauce is smooth then fold in the cooked shells.
2 teaspoons mustard, sea salt, white pepper, 1 cup shredded parmesan cheese
Bake the Bites: Fill prepared muffin tin with half of the cheesy macaroni mixture and sprinkle half of remaining cheese over the top of each muffin. Bake for 20 minutes or until tops are golden and bubbly.
Let muffins sit in pan for 10-15 minutes in order to cool slightly before handling. Otherwise, they will fall apart.
Repeat baking process with remaining mac & cheese mixture and shredded cheese. Should make 24 muffins in total.