01 - Preheat oven to 350°F and line a baking sheet with parchment paper.
02 - In a large bowl, mix grated apple, grated carrot, flour, and oats until thoroughly combined.
03 - Add egg and applesauce to the mixture. Stir until dough forms. If dough is too dry, add water 1 tablespoon at a time until it comes together.
04 - On a lightly floured surface, roll dough into sticks approximately 4 inches long and ½ inch thick.
05 - Place sticks on prepared baking sheet with slight spacing between each piece.
06 - Bake for 40-45 minutes until sticks are golden and firm. For extra crunch, turn off oven and let sticks cool inside for an additional hour.
07 - Allow chew sticks to cool completely before serving to your dog.