Step 1: Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper for easy cleanup and to prevent sticking.
Step 2: In a large bowl, combine the peeled and cubed sweet potatoes with the olive oil, sea salt, black pepper, and any optional seasonings like garlic powder or smoked paprika. Toss thoroughly with your hands until every piece is evenly coated.
Step 3: Spread the seasoned sweet potatoes in a single layer on the prepared baking sheet. Ensure there is enough space between each piece; use two baking sheets if necessary to avoid overcrowding, which can lead to steaming instead of roasting.
Step 4: Roast for 20-30 minutes, flipping the sweet potatoes halfway through the cooking time. Roasting time may vary based on your oven and the size of your potato cubes. Look for a tender interior and golden-brown, caramelized edges.
Step 5: To check for doneness, carefully pierce the largest sweet potato piece with a fork. It should be tender. For extra crispiness, you can increase the oven temperature to 425°F (220°C) for the last 5-10 minutes, keeping a close eye to prevent burning.
Step 6: Remove the roasted sweet potatoes from the oven and serve immediately as a delicious side dish. Enjoy your perfectly caramelized roasted sweet potatoes!