If you overmix the cheesecake filling or overbeat the eggs, it’s more likely that your pumpkin cheesecake bars will crack in the oven. If that happens, it’s okay! It’s not super pretty, I know, but the bars will still taste delicious.  One thing you can do is try to creatively slice the bars in the cracked areas or down any cracks to try to camouflage it. Salted caramel sauce or a dollop of Cool Whip are also great at covering up imperfections.