Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Peel and chop two medium sweet potatoes, boil for about 20 minutes until tender, then mash.

In a food processor, blend the mashed sweet potatoes with brown sugar, potato starch, tapioca starch, baking powder, and baking soda until smooth.

Let the dough rest for about 5 minutes to absorb moisture.

Drop spoonfuls of the dough onto your prepared baking sheet, spacing them two inches apart.

Bake in the preheated oven for 10-12 minutes until golden around edges and puffy in center.

Cool on the baking sheet for a few minutes, then transfer to a wire rack to cool completely.