Granny'S "Squish" Cake
["2 eggs, separated", "1 1/2 c. sugar", "2 1/4 c. sifted flour", "3 tsp. baking powder", "1 tsp. salt", "1/3 c. oil", "1 c. milk", "1 1/2 tsp. vanilla"]
["Beat egg whites until very stiff. Gradually beat in 1/2 cup sugar and continue beating until very stiff and glossy.", "Sift flour, sugar, baking powder and salt into another bowl. Add oil, half the milk and vanilla in a well in the flour mixture. Beat 1 minute. Add remaining milk and egg yolks.", "Beat 1 minute. Fold in egg whites.", "Pour in greased and dusted 9 x 13-inch pan. Bake at 325\u00b0 until done."]
["eggs", "sugar", "flour", "baking powder", "salt", "oil", "milk", "vanilla"]