Inspiration Cake
["2 sq. Baker's chocolate, grated and reserved", "2 1/2 c. flour", "1 1/2 c. sugar", "4 tsp. baking powder", "1 tsp. salt", "2/3 c. shortening", "1 1/4 c. milk", "1 tsp. vanilla", "2/3 c. unbeaten egg whites", "1 c. chopped walnuts"]
["Sift together flour, sugar, baking powder and salt.", "Add shortening, milk and vanilla.", "Beat with electric mixer for 1 1/2 minutes.", "Add egg whites and beat for 1 1/2 minutes.", "Grease and lightly flour 2 (9-inch) spring-form pans.", "Sprinkle bottom of pans with chopped walnuts; spoon 1/4 of batter into pans on top of nuts.", "Sprinkle grated chocolate reserve over batter.", "Pour remaining batter and spread evenly over chocolate layer.", "Bake at 350\u00b0 for 40 to 45 minutes."]
["chocolate", "flour", "sugar", "baking powder", "salt", "shortening", "milk", "vanilla", "unbeaten egg whites", "walnuts"]