Bake the cheesecake bars at 325 F for 43-48 minutes, placing them on the middle rack in your oven. Fill a
large, rimmed baking sheet with an inch of water and place on the rack beneath the bars. If you don't have a pan that size, any pan that can be filled with an inch of water and fit on the lower rack will work. Rotate the cheesecake bars halfway through to help them bake evenly. If you notice the top is browning too much, cover the top with a piece of foil.