All-in-one-pan chocolate cake

---------- Recipe via Meal-Master (tm) v8.05
  
       Title: All-In-One-Pan Chocolate Cake
  Categories: Cheesecakes, Chocolate
       Yield: 1 servings
  
       3 c  Flour
       2 c  Sugar
     1/3 c  Cocoa
       1 ts Baking soda
     1/2 ts Salt
       2 c  Water
     3/4 c  Vegetable oil
       2 tb White vinegar
       1 ts Vanilla
            Frosting:
     1/3 c  Unsalted butter; softened
     1/3 c  Solid vegetable shortening
     2/3 c  Sugar
       1 ts Vanilla
     1/2 c  Milk; heated to almost
            Boiling
  
      Heat oven to 350 degrees.  Sift flour, sugar, cocoa,
   baking soda and salt into a 9x13-inch baking pan. Add
   water, oil, vinegar and vanilla.   Mix with a large rubber
   spatula until smooth, taking care to mix ingredients along
   edges.
      Bake until toothpick inserted in center comes out clean,
   about 40 minutes. Cool completely on wire rack.
      FROSTING: combine butter and shortening in a food
   processor or mixing bowl. Add sugar and vanilla. Mix until
   smooth, about 2 minutes.
      Slowly drizzle in milk. Beat 2 minutes in food processor
   or 7-10 minutes with a mixer, until smooth, satiny and
   fluffy.  Chill just 20 minutes before frosting.  Helen Jolly
  
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