3 medium onions, sliced
2 tbsp. butter
4.5 oz. sliced mushrooms
1 can cream of chicken soup
5 oz. can evaporated milk
1 tbsp. soy sauce
2 c. shredded Swiss cheese
6 slices French bread
1 tbsp. fresh parsley

Preheat oven to 300°F. Spray an 8 x 8 casserole dish with cooking spray. Combine the first 6 ingredients with 1 cup of Swiss cheese. Place slices of French bread over mixture and sprinkle with parsley.

Bake, uncovered, 30 to 45 minutes or until golden brown.