Growing up, my brother was a macaroni and cheese fiend. I liked plain-old cheesy mac, but he wanted all kinds of flavors in his. My mother would make pizza macaroni with marinara and pepperoni, spicy buffalo chicken mac and cheese and (for special occasions) the recipe below for crab mac and cheese. It was probably my first exposure to crab, and I was hooked even though I was a picky eater.
The sweet flavor of the crab complements the salty bacon and savory cheese sauce really well. It's truly a dish worthy of celebration. I like using fun types of pasta shapes (such as the cavatapi used in this recipe), but don't worry if you don't have them around. It will taste just as good with regular elbow macaroni.