Step 1

Wash sweet potato, pierce with a fork, and cook on high for 6-8 minutes, or until tender. Let cool to touch.

Step 2

Scoop flesh out of potato, and transfer to a small bowl.

Step 3

Mash with vanilla and cinnamon if using.

Step 4

Transfer to a freezer-safe container with a lid, and freeze sweet potato at least 2 hours or overnight.

Step 5

Slice banana, and freeze at least 2 hours, or overnight.

Step 6

Once frozen, add potato and banana to a food processor or high-powered blender, and blend until smooth.

Step 7

Top with additional cinnamon and maple syrup or honey if desired, and serve for a soft-serve texture, or freeze until firmer for hard ice cream texture.