Bulgur Wheat, Sweet Potato, and Black Bean Casserole
1 cup uncooked bulgur wheat 1 (14-ounce) can diced tomatoes 1 (14-ounce) can black beans, rinsed and drained 2-½ cups shredded cheddar cheese, divided ¼ cup sour cream ½ cup heavy cream ½ cup chicken broth 2 teaspoons from a…