I'm a complete cooking newbie. I just made a lasanga from a recipe - or something that looks like a lasanga. However, it will probably only be eaten 3-4 hours from now. What should I do with it in the mean while? Leave it in the oven (after turning it off, of course)? Put it in the fridge? Just lay it on a table?
And how should I re-heat it, if it will be required?