Granny'S Chocolate Fudge Cake
["2 c. granulated sugar", "1/2 c. butter or margarine", "3 large eggs", "4 sq. unsweetened chocolate, melted and cooled", "2 tsp. vanilla", "1/4 c. cornstarch", "2 tsp. baking soda", "1 3/4 c. all-purpose flour", "2 c. nuts", "1 c. sour cream", "1/2 c. milk"]
["Adjust oven racks so that one is in the middle.", "Heat oven to 350\u00b0.", "Grease and flour a 10 x 10 x 4-inch heart-shaped or round angel food cake pan with movable bottom.", "Mix sugar and butter in a large bowl with electric mixer on medium speed until crumbly. Add eggs, gradually, increasing mixer speed to high, and beat until mixture is creamy and pale.", "Then add 2 cups of nuts. Reduce speed to low.", "Beat in chocolate and vanilla, then cornstarch and baking soda.", "Scrape down sides of bowl.", "Add half the flour and sour cream.", "Before fully blended, add remaining flour and sour cream.", "Still at low speed, beat in milk just until blended."]
["sugar", "butter", "eggs", "unsweetened chocolate", "vanilla", "cornstarch", "baking soda", "flour", "nuts", "sour cream", "milk"]