Instructions. 1  Preheat oven to 450 degrees (F). 2  Peel the sweet potatoes (if preferred) and cut off the pointy ends. 3  Place the sweet potato wedges in a large bowl, then add in the olive oil, salt, sugar, seasoning, and black pepper.  Arrange the sweet potato wedges in a single layer on the prepared baking sheet. Bake for 30 minutes, then turn on the broiler and bake for another 3-5 minutes, or until they're well browned and crispy. Keep an eye here - it's easy to burn when the broiler is on! Cool wedges on pan for 5 minutes, then serve at once!