Fudge Walnut Ripple Layer Cake
["1 2/3 c. unsifted flour", "1 1/2 c. sugar", "2/3 c. unsweetened cocoa", "1 1/2 tsp. baking soda", "1/2 tsp. salt", "1 1/2 c. buttermilk", "1/2 c. shortening", "3 eggs", "3 tsp. vanilla extract", "1 (8 oz.) pkg. cream cheese, softened", "2 Tbsp. margarine or butter, softened", "1 Tbsp. cornstarch", "1 (14 oz.) can sweetened condensed milk", "Fudgy Frosting", "3/4 to 1 c. chopped walnuts"]
["Preheat", "oven", "to 350\u00b0.", "In a large mixer bowl, combine flour, sugar,", "cocoa, baking soda, salt, buttermilk, shortening,\t2 eggs", "and", "2", "teaspoons vanilla extract.", "Beat on low speed until blended, scraping bowl constantly.\tBeat 3 minutes on", "high speed, scraping bowl occasionally.", "Pour into 2 paper lined, greased and floured 9-inch cake pans."]
["flour", "sugar", "unsweetened cocoa", "baking soda", "salt", "buttermilk", "shortening", "eggs", "vanilla extract", "cream cheese", "margarine", "cornstarch", "condensed milk", "Fudgy Frosting", "walnuts"]