Chocolate marble cake

MMMMM----- Recipe via Meal-Master (tm) v8.01
  
       Title: Chocolate Marble Cake
  Categories: Penndutch, Cakes
       Yield: 1 servings
  
     1/3 c  Butter
       2    Egg, well beaten
       1 c  Sugar
   1 1/2 c  Flour
       2 ts Baking powder
     1/2 c  Milk
       1    Chocolate, unsweetened, squa
            -e
       1 tb Butter
       1 ts Vanilla
  
   Cream the 1/3 cup butter and sugar together, add the well beaten eggs
   and mix well. Sift flour and baking powder and add alternately with
   the milk to the first mixture. Put 1/3 of mixture into a bowl and add
   the 1 Tbsp of butter and chocolate which have been melted together.
   To the white batter, add the vanilla. Drop white batter, then
   chocolate, by spoonfuls into a well-greased, deep cake pan and bake
   at 350-F about 40 minutes.
   
   Source:  Pennsylvania Dutch Cook Book - Fine Old Recipes, Culinary
   Arts Press, 1936.
  
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