Preheat the oven to 350°F. Coat a 9x13-inch baking dish with cooking spray.

Peel and slice the sweet potatoes into rounds approximately 1/8-inch in thickness. Into the prepared baking dish, neatly arrange the sweet potato rounds in overlapping layers. Set aside.

Into a small mixing bowl, add the orange juice, melted butter, and salt. Stir to combine then pour evenly over the sweet potatoes.

Cover and bake for 30 minutes.

While the sweet potatoes are baking: In a small bowl, combine the brown sugar, chopped pecans, and cinnamon.

After 30 minutes of baking, carefully remove the sweet potatoes from the oven. Remove the foil, then sprinkle the pecan/sugar mixture over the top of the sweet potatoes.

Return the sweet potatoes to the oven then continue to bake, uncovered, for an additional 30 minutes, until the potatoes are cooked through then serve hot.