Sweet Potato Chili with Turkey and Black Beans

Ingredients

• Extra-virgin olive oil, as needed
• 1 pound ground turkey
• 1 medium onion, chopped
• 3 garlic cloves, minced
• 1 large sweet potato, peeled and cut into ½-inch cubes
• Kosher salt and freshly ground black pepper, as needed
• 2 tablespoons chili powder
• 1 teaspoon ground cumin
• 1 teaspoon dried oregano
• ½ teaspoon crushed red pepper flakes
• ¼ teaspoon ground cloves
• 2 cinnamon sticks
• 1 bay leaf
• One 15-ounce can diced tomatoes
• One 15-ounce can tomato sauce
• One 15-ounce can black beans, drained and rinsed
• Avocado slices, chopped scallions, cheddar cheese and sour cream, for serving (optional)