Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a mixing bowl, combine the whole wheat flour and rolled oats, and mix well.

In another bowl, mix together the mashed banana, peanut butter, egg, and olive oil until smooth.

Gradually add the dry ingredient mixture to the wet ingredients, mixing until a dough forms.

If the dough is too dry, add water a tablespoon at a time until it's workable.

Lightly flour your work surface and roll out the dough to about 1/4-inch thickness.

Use your cookie cutter to cut out shapes and place them on the prepared baking sheet.

For a fun twist, you can twist two shapes together before baking for a unique look!

Bake in the preheated oven for 20-25 minutes or until they are golden brown.

Remove from the oven and allow the treats to cool completely on a wire rack.