Preheat oven to 350°F. Spray a shallow 1-1/2-quart baking dish with cooking spray.
Place sweet potatoes in prepared baking dish.
Melt butter in a small saucepan over low heat. Stir in corn syrup, brown sugar, salt and cinnamon. Cook and stir 1 to 2 minutes or until smooth. Pour evenly over sweet potatoes; stir gently to coat.
Bake 25 to 30 minutes or until hot and bubbly. Sprinkle with marshmallows and return to the oven until marshmallows are lightly browned, about 5 minutes.
About Corn Syrup
See why there’s no substituting Karo® Corn Syrups for treats with a delicate sweetness and smooth texture
Preheat oven to 350°F. Spray a shallow 1-1/2-quart baking dish with cooking spray.
Place sweet potatoes in prepared baking dish.
Melt butter in a small saucepan over low heat. Stir in corn syrup, brown sugar, salt and cinnamon. Cook and stir 1 to 2 minutes or until smooth. Pour evenly over sweet potatoes; stir gently to coat.
Bake 25 to 30 minutes or until hot and bubbly. Sprinkle with marshmallows and return to the oven until marshmallows are lightly browned, about 5 minutes.