Roasted Sweet Potatoes and Carrots

Bahan-bahan (6 porsi)

• 3 cups sweet potatoes (peeled and diced 1")
• 3 large carrots (peeled and sliced)
• 1 tablespoon olive oil
• ¼ teaspoon salt
• ¼ teaspoon black pepper
• ¼ teaspoon cinnamon
• ⅛ teaspoon ground ginger
• 1 tablespoon brown sugar (optional)
• 1 tablespoon butter