Ingredients:

• 1 cup long grain rice
• 1 sm. can sliced mushrooms
• 1/2 stick of butter
• 1 can Campbell's French Onion Soup
  
• 1 can (10 oz.) water

Combine all ingredients in a 2-1/2 to 3 quarts glass casserole dish. Cover and bake at 350° F ( 175° C ) for 1 hour.