Boil sweet potatoes until almost done, peel and slice. Put in a baking dish.

ORANGE SAUCE:

1/3 c. brown sugar
1/3 c. white sugar
2 tbsp. cornstarch
Pinch of salt

Mix sugars, salt, cornstarch. Add 1 cup orange juice. Melt 3 tablespoons butter. Cook until thick. Pour over sweet potatoes and bake at 350 for 20 or 25 minutes.