Make-ahead: Stuff the artichokes up to 1 day ahead; cover and refrigerate, then bake as directed (add 5–10 minutes if baking straight from the fridge). Doneness varies by size—smaller artichokes may finish in ~45 minutes; very large ones can take up to 90. Leftovers: Refrigerate up to 3 days and reheat covered at 350°F (177°C) for about 15 minutes. Optional: remove the choke (fuzzy center) after trimming the top quarter of the artichoke for easier eating.