Prep: Preheat your oven to 350°F. Lightly coat a baking sheet or baking dish with non-stick cooking spray.
Season: Place the sweet potato cubes directly into the baking dish. Drizzle the melted butter and olive oil over them.
Coating: Sprinkle the brown sugar, cinnamon, nutmeg, ginger, and sea salt over the potatoes. Use a spatula or your hands to toss the cubes until each one is evenly coated in the spice mixture.
Roast: Place in the oven and bake for 60 minutes.
Toss: Every 20–30 minutes, open the oven and flip the potatoes with a spatula. This ensures that all sides get that signature caramelized crust and prevents sticking.
Serve: Serve warm as a side to roasted chicken, pork chops, or even alongside a fresh autumn salad.