Do it! Or not.

Place on a tray in the centre of a preheated oven.
Place on a preheated tray in the centre of a preheated oven.
Place on a tray in the top of a preheated oven
Place in the top of a preheated oven. but not on a tray.
For best results, oven heat.
For best results, microwave.
OK, I am a male, I obey instructions, but I do wonder WHY. If any good woman - or even a bad woman - can explain why, I will be very grateful, and might even prepare you a Lamb Moussaka. Placed on a heated or unheated tray. Or not. Iin the middle or top of an oven. Or not. Or microwaved. Or not. No wonder my preferred meal is a cheddar cheese sandwich. Or not.