Preheat oven to 350°F.
Wash, peel, and dice sweet potatoes.
In a medium bowl, combine olive oil, honey, lemon juice, and cinnamon.
Add sweet potato cubes to the mixture and toss to coat.
Place sweet potato cubes on a lined baking sheet and sprinkle with salt and pepper.
Bake for about 1 hour, or until cubes are tender.