Because it takes a few hours to cook in the slow cooker, this is a great dessert to make ahead. You can cook it for 2-3 hours, then turn to warm to keep it warm until ready to serve (up to an hour - it's not fussy and and may even crisp up that crust even more!) Because it is so easy to make, for best results I would make it no more than 4 hours ahead. u003cbr/u003eu003cbr/u003eIt would actually be more work to make it a day ahead of time due to having to let it cool before storing then fully reheating to serve.