1: Melt butter first, add in sugar, and rest of dry ingredients, stir continuously until sugar melts on medium heat.
2: Add cut sweet potato to the pan, shingle potatoes in the pan, add a few pieces of cubed butter, cover and cook for 45 minutes at 350°F.
3: Take off cover, check tenderness of sweet potato, if completely tender cook for an additional 7 minutes at 400°F to caramelize.