There are lots of baking aids and recipes out there! One is this dog treat baker available from Amazon.

https://www.amazon.com/Bake-Bone-Original-Treat-Maker/dp/B00CIJMD6K/ref=sr_1_3

It comes with lots of delicious easy to follow vet approved recipes such as Carrot & Apple, Pumpkin, Carrot & Spinach, Banana Flax, Chicken & Wild Rice and many more!   Pick a recipe and get started.  It’s a good way to make sure your treats only have the ingredients you want for your dogs.