A pancake restaurant on the Steenstraat near the windmill museum, Oudt Leyden has been serving traditional Dutch pancakes — the giant, thin, savoury or sweet kind — for decades and is the standard local recommendation for visiting families and tourists. The interior is old-fashioned but the kitchen is reliable and the menu has the full ridiculous range of toppings.
The Steenstraat itself is a slightly anonymous shopping street, but the restaurant is a useful pause if you've just come from Naturalis or the central station. Lunch is busy; book ahead for dinner on weekends.