When you take the cakes out of the oven, let them sit for about 1 minute before flipping them out. Then use oven mitts to quickly place the ramekin upside down on top of a plate, and carefully lift the ramekin up. You can also put a plate upside down on top of the ramekin and flip the entire plate and ramekin upside down. For extra security, run a knife around the edge of the ramekin to release anything that might have stuck.