Preheat the oven to medium-high
Peel the sweet potatoes and wash them thoroughly
Cut them into 1-2 inch slices
Grease a baking dish, and arrange the slices into a single layer
In another pan, add the butter, sugar, orange juice, and stir over medium heat
Pour this mix over the sweet potatoes, and cover with an aluminum sheet
Bake the sweet potatoes for about 45 min covered, then 5-10 min uncovered
Serve it hot and enjoy all the compliments!