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 surface until it is ½ inch thick. If necessary, add 2-3 tablespoons of water to firm up the dough.

Use a dog-inspired cookie cutter to cut out cookies and place them on the prepared sheet pan.

Bake for 15-25 minutes or until golden brown. Remove from oven and let cool before serving.