Dogs are so easy to cook for, and I think the best rule is keep it simple - you can make something your dog loves with just 4 or 5 ingredients.
I have been experimenting with 'tuna fudge', and here is my recipe.
350g of canned tuna (do not drain)
300g of plain flour
40g of grated or powdered parmesan cheese (optional)
garlic powder (optional)
Combine all ingredients, and add water if necessary (I always have to add water if I bought 'no drain' tuna cans), mix with an electric beater until it becomes a cake-mix like consistency. Well a chunky cake-mix. Transfer to a buttered cake tin and cook in the oven for about 45 minutes at 180 degrees Celsius.
This is one cake where I am not keen to lick the beaters. As is the usual tradition in houses with human pups, here we let the kids lick the bowl.
It goes brown on the top and shrinks away from the edges a little when it's done. It will be a little gooey in the middle if you have added parmesan.
When it's cool and 'set', cut into treat sized pieces. The result will not be too messy in your pocket as long as the weather is cool. Keep the bits in a nice sealed container in the fridge for the longest life.
Barbie and Bender certainly love these treats, and heartily endorse them. They always hang around in the kitchen when I am cutting them up.