This recipe came from Campbell's Soup. It is really simple and the chicken stays really tender and juicy.
1 can Cream of Mushroom Soup
1 cup water
3/4 cup uncooked regular long-grain white rice
1/4 teaspoon paprika
1/4 teaspoon ground black pepper
4 skinless, boneless chicken breast halves
Stir the soup, water, rice, paprika and black pepper in a 2-quart shallow baking dish. Top with the chicken. Season with additional paprika and black pepper. Cover the baking dish. Bake at 375°F. for 45 minutes or until the chicken is cooked through and the rice is tender.