01 - Preheat oven to 350°F and line a baking sheet with parchment paper.
02 - In a large mixing bowl, combine the grated apple, grated carrot, flour, and oats. Mix thoroughly until evenly distributed.
03 - Add the egg and applesauce to the mixture, stirring until a cohesive dough forms. If the dough feels dry, incorporate water 1 tablespoon at a time until proper consistency is achieved.
04 - On a lightly floured work surface, roll the dough into sticks approximately 4 inches long and 1/2 inch thick.
05 - Place the shaped sticks on the prepared baking sheet, leaving slight spacing between each piece.
06 - Bake for 40-45 minutes until the sticks are golden brown and firm. For extra crunch, turn off the oven and allow the sticks to cool inside for an additional hour.
07 - Let the chew sticks cool completely on the baking sheet before serving to your dog.