Preheat the oven to 350 degrees Fahrenheit and set aside a baking pan that is lined with parchment paper.
In a mixer, beat together the peanut butter, egg, banana, and maple syrup until fully combined. Slowly beat in the whole wheat flour.
Take the dough and roll it out on a floured countertop until it is ½ inch thick. It should be a crumbly dough. If you would like to firm it up slightly, add in 2-3 Tablespoons of water.
Once rolled out, use a dog-inspired cookie cutter to cut out cookies and set them on the sheet pan.
Bake for 15-25 minute or until golden brown. Remove and let cool before serving.
Notes
The dough will be crumbly as you’re working with it. If you want to firm it up slightly you can add in 2-3 tablespoons of water.