Cocoa Fudge Cake
["1 2/3 c. all-purpose flour", "2 c. cake flour", "1 1/2 c. sugar", "2/3 c. cocoa", "1/2 c. shortening", "1 1/2 c. buttermilk", "1 1/2 tsp. baking soda", "1 tsp. salt", "1 tsp. vanilla", "2 eggs"]
["Heat oven to 350\u00b0.", "Grease and flour rectangular pan (13 x 9 x 2-inch).", "Beat all ingredients on low speed, scraping bowl constantly, for 30 seconds.", "Beat on high speed, scraping bowl occasionally, for 3 minutes.", "Pour into pan.", "Bake until wooden toothpick inserted in center comes out clean, 35 to 40 minutes."]
["all-purpose", "cake flour", "sugar", "cocoa", "shortening", "buttermilk", "baking soda", "salt", "vanilla", "eggs"]