Preheat oven to 400 degrees F. and line a baking sheet with parchment paper.

Peel the sweet potatoes and cut them into one-inch cubes. Add them to the baking sheet.

In a small bowl mix together the brown sugar, cinnamon, and salt.

Spray the sweet potatoes with olive oil spray then sprinkle on the brown sugar, cinnamon, and salt.

Roast the potatoes for 30 minutes, stirring and flipping half way through.