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.
