Preheat oven to 350°.
Combine sweet potato and broth in a large nonstick skillet. Bring to a simmer over medium-low heat; cover and cook 7 minutes or until tender. Add onion and garlic; cook 2 minutes. Add corn, black beans, bell pepper, cilantro, and lime juice; simmer, uncovered, 6 minutes or until thoroughly heated. Combine sweet potato mixture and refried beans in a medium bowl. Spoon about 1/2 cup sweet potato mixture down center of each tortilla, and roll up. Place burritos in a 13 x 9-inch baking dish; cover with foil.
Bake at 350° for 15 minutes or until thoroughly heated. Serve each burrito with 1 tablespoon sour cream and 1 tablespoon salsa. Sprinkle each burrito with 1 teaspoon chopped cilantro, if desired.
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.