I make my own dog treats and have been doing so for a couple of years now. When my dog was a puppy we discovered that he has food allergies, so finding healthy treats that don't bother his allergies is tough. Making my own is so much easier since then I know exactly what goes into the treats.
I guess you could kind of say that I make his food as well, because he eats a prey model raw diet.
I never really paid much attention to how long I spend making my dogs food. Maybe all together a total of around 2ish hours a week, including the time it takes for the treats to bake in the oven?