• Preheat oven to 350°F.
• Smash the bananas in a large mixing bowl using a potato masher. Add egg, peanut butter, and cinnamon to the mashed bananas and beat until smooth.
• Fold in the flour and knead until a dough forms. The dough texture should be similar to a dry biscuit dough and easy to handle. If it is too wet, sprinkle in some more flour, 1 tablespoon at a time.
• Flour the counter or a large cutting board, roll the dough out to about ¼” thick. Cut into shapes with cookie cutters. Reroll the scraps and continue cutting into shapes.
• Place cookies on a baking sheet between ½” to 1” apart. Bake for 20 minutes. Rotate pan, flip cookies, reduce oven temperature to 300°F and bake for another 30 minutes.
• Remove from oven and allow to cool completely on a wire rack. Store in an airtight container for up to two weeks.

https://wildwildwhisk.com/banana-peanut-butter-dog-treats/#recipe