How much (home-prepared) food should I feed my dog?

One important piece of information is missing here. How many meat are you making from this recipe? If you are making 5 meat from this and your dog is not very active then 2-3 a day would be about right. If this is all you are feeding your dog its not a balanced diet. If the meat are fed as treats its OK. The amount to feed your dog is enough to maintain a healthy weight. If he's too thin, feed more. If he's overweight, feed less. Its that simple.