In a food processor, combine oats, almond flour, baking powder, baking soda, ½ teaspoon of cinnamon, and nutmeg. Pulse until oats become mostly fine flour.

In a large bowl, whisk together sweet potato puree, maple syrup, coconut oil, egg, vanilla extract⁠, and salt. Stir in the oats mixture and mix until the dough forms. Refrigerate for 30 minutes.

Preheat the oven to 350°F. Line a baking sheet with parchment paper. In a small bowl, whisk together sugar and 1 teaspoon of cinnamon. Scoop out the dough with a small cookie scoop and roll it into a ball. Coat the dough balls with the sugar mixture. Place on the prepared baking sheet and flatten with your fingers. Bake for 10-12 minutes.

Cut the marshmallows in half. Remove the cookies from the oven and place marshmallows in the center of the cookies, cut side up. Broil until marshmallows are browned, for 3 minutes.