Ho Ho Cake - cooking recipe

Ingredients

1 (9 ounce) package chocolate cake mix
5 tablespoons all-purpose flour
1 1/4 cups milk
1 cup white sugar
1/2 cup margarine
1 cup shortening
1/2 cup margarine
1 teaspoon vanilla extract
1 egg
1 1/2 teaspoons hot water
3 (1 ounce) squares unsweetened chocolate, melted
1 3/4 cups confectioners' sugar

Preparation

Prepare and bake cake as directed on the package for a 9 x 13 inch pan. Cool completely.
Combine flour and milk in saucepan. Cook, stirring constantly, until thick. Cool completely. Cream 1 cup sugar, 1/2 cup margarine, and shortening. Add cooled milk mixture, and beat well. Spread over cake. Refrigerate.
In a small bowl, beat egg. Stir in vanilla, melted chocolate, hot water, confectioner's sugar, and 1/2 cup margarine. Pour over second layer. Refrigerate.