I occasionally fresh cook for my dog, she likes lentils, oats, sweet potatoes, parsnips, fennel bulb, celery , leafy greens amongst other things. I also use a slow cooker and a mix of herbs either dried or fresh. Dogs can also eat fruits with pips or stones removed. You can dry eggshells for the calcium. I don’t have any set recipes but I use an app to check I’ve covered all the vitamins.