Store in the freezer, in a sealed container, for up to 1 week.
If you want to make just a large cheesecake instead of mini ones, you can just bake the brownie in the pan where you will later assemble your cheesecake. Then simply pour the prepared cheesecake filling over the pan where you baked and cooled down your brownie. Freeze for a few hours, or overnight and then you can top with the whipped coconut cream, and serve.