Zucchini Casserole(New To Us)  
["2 lb. zucchini and yellow squash, mixed if you like", "2 egg yolks, slightly beaten", "1 c. sour cream", "2 Tbsp. flour", "2 egg whites, stiffly beaten", "6 slices crisp bacon, crumbled", "1 1/2 c. shredded Cheddar cheese", "1/2 c. bread crumbs (buttered if you like)"]
["Cook whole squash 5 minutes in salted water.", "Cool and slice thin; sprinkle with salt (if you like).", "Mix yolks, sour cream and flour; fold into whites, then mix with squash.", "In a 12 x 7 x 2-inch dish layer 1/2 the squash mix with 1/2 of the cheese and 1/2 of the bacon.", "Repeat and cover with crumbs.", "Bake at 350\u00b0 for 25 minutes."]
["zucchini", "egg yolks", "sour cream", "flour", "egg whites", "bacon", "Cheddar cheese", "bread crumbs"]