Preheat your oven to 425°F (220°C).
Wash and peel the sweet potatoes, then cut them into bite-sized cubes.
In a large bowl, combine the cubed sweet potatoes with olive oil, brown sugar, cinnamon, salt, and black pepper.
Spread the sweet potatoes evenly on a baking sheet lined with parchment paper.
Roast in the preheated oven for about 25-30 minutes, stirring halfway through.
Check doneness; sweet potatoes should be tender and caramelized.
Once done, remove the sweet potatoes from the oven and let them cool slightly.
Serve warm and enjoy!