Preheat oven to 350 degrees F.
Prick sweet potato several times. Cook in microwave in high for about 7 min or until tender.
Scoop out the flesh and discard the skin. Mash the sweet potatoes. Transfer 1 cup of sweet potatoes into a mixing bowl.
Mix whole wheat flour, unsweetened apple sauce , and eggs in the bowl. Mix until a dough forms. Turn the dough on a well floured surface and roll about 1/4 inches.
Turn the dough on a well floured surface and roll about 1/4 inches. Cut out shapes using a cookie cutter. Arrange cookies on a baking sheet lined with parchment paper or a silicone mat.
Bake for 30-40 min or until crisp but not burnt. Cool the pans for about 5-10 minutes.