you prefer a fudgier center, pull the pan from the oven as soon as the middle looks just set. For firmer bars, bake a few minutes longer, but watch closely because the sugar can make them go from perfect to overdone quickly.
Easy add-ins: Even though the base recipe is only three ingredients, you can fold in a handful of chocolate chips, chopped peanuts, or a pinch of sea salt for a little extra contrast without complicating the method.
