Yes, making mac and cheese a day ahead is not only possible—it’s a strategic move. You get to stress less, drink wine while everyone else panics, and serve a dish that tastes like you’ve been slaving over it for hours. The texture might be slightly different from a freshly baked one—slightly denser, slightly more cohesive—but in my book, that’s a feature, not a bug. It holds together better on the plate, it reheats like a dream, and it scoffs at people who say “it must be made fresh.” To them, I say: try it with bacon and jalapeños tomorrow. See if they complain.
So go ahead. Prep your mac. Sleep soundly. And when you pull that bubbly, golden dish out of the oven the next day, take a bow. You’ve earned it.