10 inch baked pie shell, deep dish
1 c. chopped onion
2 tbsp. butter
2 (4 oz. each) cans drained, sliced mushrooms
3 eggs
13 oz. can evaporated milk
3/4 c. shredded Swiss cheese
1/2 can French fried onion rings
1/2 tsp. dried mustard

Saute onions in butter and spread in bottom of shell. Sprinkle mushrooms on top, beat eggs, milk, cheese, and mustard. Pour into shell. Sprinkle with onion rings. Bake at 375 degrees for 30-40 minutes. Makes 1 quiche. Can be made 1 day ahead or can freeze.