Try it out - its the perfect finger-food treat for kids and adults of all ages.
Step 1: Find and roast sweet potatoes
Note that these potatoes are grey/white on the outside, and purple on the inside. Other varieties of purple sweet potato have a reddish-browninsh-purple exterior, but tend to be a bit dry for making sweet potato balls.
Wash the exterior of your sweet potatoes, place them on a foil-covered baking sheet, and stick in a 350F oven for 1-2 hours (depending on potato size) until thoroughly roasted. You'll be able to squish them with your hands just like an orange sweet potato when they're cooked through.