How do I get my cheesecake bottom not to crumble?
When you crumble the Oreos for the Oreo crust, keep the fillings in. You can put them all in a plastic bag and squash them thoroughly with a rolling pin, then scrape the whole (somewhat greasy) mass out and press it into your cheesecake pan. That one ingredient -whole Oreos- is all you need for the crust.