How do I tell when my vegan cheesecake is done cooking?

It's been in a 350F oven for fifty minutes (it said to do 40, until it looked firm. Which it didn't, but I was afraid of over-cooking it), then I shut off the oven and left it in for half an hour. It's still pretty jiggly and the edges are just barely darkening. Will it crack like I hear a normal cheesecake is supposed to?