Sour Cream Raisin Bars
["1 3/4 c. oatmeal", "1 c. brown sugar", "1 c. margarine", "1 3/4 c. flour", "1 tsp. soda", "4 egg yolks, beaten", "3 Tbsp. cornstarch", "2 c. sour cream", "1 1/2 c. sugar", "2 c. raisins", "4 egg whites"]
["Mix oatmeal, brown sugar, margarine, flour and soda.", "Pat in 9 x 13-inch pan, saving some for topping.", "Bake at 350\u00b0 for 15 minutes."]
["oatmeal", "brown sugar", "margarine", "flour", "soda", "egg yolks", "cornstarch", "sour cream", "sugar", "raisins", "egg whites"]