WW Mexican Casserole

                                                                                                                                             
    1 lb extra lean ground beef
    1 cup onion, chopped
    1 (14 ounce) can diced tomatoes, drained
    1 1⁄2 cups frozen corn
    1 (540 ml) can black beans, drained and rinsed
    1 teaspoon crushed chile
    1 cup fat free sour cream
    1⁄2 cup low-fat cheddar cheese, shredded

Directions

    Brown hamburger and onions in large skillet, until thoroughly cooked.
    Add tomatoes, corn, back beans and crushed chilies, mix well.
    Simmer for 10 minutes, stirring occasionally.
    Mix in sour cream, simmer another 10 minutes.
    Top with cheese when serving.