Preheat your oven to 400°F (200°C).

Peel and dice the sweet potatoes into small cubes, and do the same with the apples after removing the cores.

In a large mixing bowl, combine the diced sweet potatoes and apples. Drizzle with olive oil and maple syrup (if using), then sprinkle with cinnamon, salt, and pepper. Toss everything together until well coated.

Line a baking sheet with parchment paper for easy cleanup and spread the sweet potatoes and apples in a single layer on the sheet.

Roast for about 25-30 minutes, turning once halfway through, until the sweet potatoes are tender and caramelized at the edges.

Once done, remove from the oven, sprinkle with chopped pecans, and serve warm.