Thoroughly wash sweet potatoes and pierce the skins 5-6 times with a fork
Place on cookie sheet and bake for 1 hour, or until soft (actual baking time depends on thickness of potatoes. If they are still hard in the center when you cut one open, continue baking until completely soft)
Slice potatoes in half and scoop the insides into a separate bowl, being sure to leave a little of the "meat" of the potato still in the skin to help keep it's shape
Thoroughly mash potatoes in a bowl and add in all ingredients except cheese and cilantro
Scoop spoon fulls of mixture into each potato skin until full
Top with mozzarella cheese and place back into oven for 15-20 minutes