Mushroom Pie
["1 lb. mushrooms", "1/4 c. chopped onion", "3 Tbsp. butter", "2 Tbsp. flour (scant)", "1/3 c. Parmesan cheese", "1 egg", "1 c. sour cream"]
["Saute onions in butter.", "Add mushrooms; cook 8 minutes or until juicy.", "Add flour and cheese."]
["mushrooms", "onion", "butter", "flour", "Parmesan cheese", "egg", "sour cream"]