Yep. In fact, my 13, 10, and 8 year old each have a night during the week that they are in charge of cooking dinner. For my older girls, this is a "night off" for me, but for my 8 year old son, it's "cooking lessons" for him.
My 4 year old son already knows how to make scrambled eggs on his own. With me standing by, of course. My older girls have been cooking for so long that they can make quite gourmet dishes. I'll start my 6 year old on lessons soon, too. My kids all love it, and I never have to worry about when I leave town. We are a family of cooks. :)