I never take recommended cooking times all that seriously. I think they're often less than is needed, and to me they're just guidelines. I don't cook much processed food, but recipes are often the same, sometimes they're just not very accurate. So I just cook things by inspection if it's the first time I've cooked whatever it is, adjust each time I cook it, and write my own instructions. It's quite handy to have a temperature probe to find out what's going on in the middle of a dollop of food.
I don't cook many different things anyway, so I get to repeat the processes and gradually tweak them to near-perfection. Baking bread annoys me because it's such a fine line between getting the inside cooked enough and not overcooking the outside. I have a crafty method of frying eggs on an electric hob - I warm the raw eggs in a microwave for about 20 seconds at full power, heat the frying pan with a spot of butter for 100 seconds on full, also heating a lid on another hob for the same time, turn it off, put the eggs in, put the lid on, and then wait a few minutes. It's very hard to burn the eggs that way because the pan cools down towards the end of the process. Of course it only works with the particular cooker and frying pan that I use - for different equipment the numbers would have to be tweaked.