- Cut the sweet potatoes into 1/2-inch cubes. The skin has a lot of nutrients, so there is no need to peel the potatoes, unless you really want to.
- Place in a large zip lock bag and drizzle 1-2 tsp. olive oil into the bag.
- Seal bag and massage to coat the potatoes with oil.
- Place in roasting pan and sprinkle lightly with crushed rosemary.
- Roast at 400 degrees F., about 30 minutes (they should be starting to brown).