1 (10 1/2 oz.) can cream of mushroom soup
1 soup can milk
3/4 c. uncooked regular rice
1 (4 oz.) can mushroom stems and pieces
1 (about 1 1/2 oz.) env. onion soup mix
2 chicken breast, halved or whole (2 1/2 to 3 lb.) chicken, cut up

Heat oven to 350 degrees. Mix mushroom soup and milk; reserve 1/2 cup of the mixture. Mix remaining soup mixture, rice, mushrooms with liquid, and 1/2 the onion soup mix. Pour into 11 1/2 x 7 1/2 ungreased baking dish. Place chicken breasts on top. Pour reserved soup mixture over chicken breasts, sprinkle with remaining onion soup mix. Cover with foil and bake 1 hour, uncover and bake 15 minutes longer.