- 2 1/2 pounds sweet potatoes
- cooking spray
- 2 tablespoons white sugar
- 2 teaspoons cornstarch
- 1/2 teaspoon salt
- 1/2 teaspoon ground ginger
- 1/2 cup orange juice
- 3 tablespoons butter
- Pierce skin of sweet potatoes in several spots with a fork.
- Cook sweet potatoes in microwave oven until just tender, 12 to 15 minutes. Refrigerate sweet potatoes until cooled completely, at least 20 minutes.
- Preheat oven to 350 degrees F (175 degrees C). Prepare a shallow 1 1/2-quart baking dish with cooking spray.
- Peel sweet potatoes and cut into cubes; spread into prepared baking dish.
- Mix sugar, cornstarch, salt, and ginger together in a glass measuring cup; pour orange juice into the cup while stirring with a whisk.
- Heat orange juice mixture in microwave oven for 1 minute, stir, and continue to heat until thickened and smooth, 30 to 60 seconds more; add butter and stir until melted. Pour the liquid over the sweet potatoes.
- Bake in preheated oven until sweet potatoes are heated through, 15 to 20 minutes.