1 pkg. onion soup mix
1 1/2 lb. chuck steak, cut into serving pieces
2 tbsp. butter
1/2 lb. fresh mushrooms, sliced

On 2 1/2 feet of aluminum foil, grease with 1 tablespoon butter. Sprinkle with 1/2 package onion soup mix. Place meat on top, sprinkle with remaining soup mix, sliced mushrooms. Dot with remaining butter. Seal foil to make a package, place in baking pan. Bake 1 hour at 375 degrees.