If you want to cook meals, it's very simple, I would cook up some burger, a big batch, drain off the grease, add veggies and a bit of white rice. They loved it. Also add some raw apple. If you do a Google search on home cooking for dogs you will get all kinds of great ideas, that's what I did, Amazon has good cookbooks too
oh yea, and the ratio is 50% meat, 25% veg and 25% carb