1.5 lb. Boneless, Skinless Chicken Breast
1 Onion, sliced
1 Bell Pepper, sliced
4oz. Can Mushrooms, drained
2 Cloves Garlic, minced
12oz. Can Diet 7-up

Arrange chicken in a 3-quart casserole and top with remaining ingredients. Cover and bake at 350 for 35-45 minutes, or until chicken is tender. Uncover and bake 10 minutes more.