On a clean surface, add flour, making a well in the middle, add egg, sweet potato puree, mix until all combined, forming the dough into a ball. Add flour as needed.
Sprinkle flour on your work surface, knead dough and form a circular ball.
Cut the dough into 4 pieces, then roll each piece into long pieces about an ½ inch thick.
Cut each roll into pieces, using a cheese grater, pressing slightly, and rolling each piece down.
In a large pot of boiling water add sweet potato gnocchi, when cooked they will float to the top. In a Colander, drain the water.