Notes
You can use any pasta shape you wish but I suggest a shorter
pasta like Cavatappi or elbow.
This packs a slight kick, so add the cayenne pepper to taste.
I tend to use frozen shrimp most often as it's super convenient; just thaw before using and pat dry.
For a pretty presentation, leave out about a dozen of the shrimp
and add to the top of the pasta before placing the remaining cheese and
breadcrumbs on top.
Using half and half makes for a decadent mac and cheese. For a
slightly lighter version you can use whole milk and keep everything else the same.
To make a half recipe, cut all ingredients in half and use an 8" x 8" baking dish.
For families with shrimp-lovers and shrimp-haters: Use all the same ingredients, all the same amounts, except use just half the quantity of shrimp. When the cheese sauce has finished thickening, fold in the cooked pasta, and then divide the cheesy pasta between two 8" x 8" baking pans (or dishes of a similar size). Fold the shrimp into only one of those pans. And then proceed with the rest of the instructions, adding more shredded cheese and the buttery Parmesan breadcrumbs to the top of each pan. Bake both pans in the oven at the same time.