Bake chocolate cake in a 9 x 13 pan. When cake cools, split it with a long string.

FILLING:

5 tbsp. flour
1 c. milk

Cook until thick. Let cool until lukewarm. 1/2 c. butter 1 c. sugar 1 tsp. vanilla

Add paste and beat until fluffy; add 4 tablespoons powdered sugar. Spread between cake layers.