I cook when I need to.
I would love to have a nice breakfast restauraunt right around the corner from wherever I spend the night, but it doesn't always work out like that. So I carry oatmeal and coffee fixins as a general rule, for breakfast. It depends, if I know I'm on the way to a campsite and will be breakfast-ing there, sometimes I'll pick up some eggs and fruit or whatever to go along with the oatmeal.
After a long day in the saddle, I like to have a large meal a couple of hours before bed, for recovery. If I'm in the middle of nowhere, I'll get stuff to take to the campsite or wherever I am if I can't find some other place to eat. Spaghetti is a staple, I just get one of those small jars of sauce if I can find one, use what I need and throw the rest away. Sometimes I'll pick up some burger and bread to go with it. A large plate of spaghetti and a quart of milk is a great recovery meal, and you'll sleep like a baby with that in your stomach.
Basically I carry a small stove, a pot, a cup, a plate, a spork, and a few other small items so that if I need to make something up to eat, I can do it.