Ho Ho Cake

1 chocolate cake mix
1 stick butter
1/2 c. shortening
1 c. granulated sugar
3 tbsp. flour
1 tsp. vanilla
3/4 c. milk

HO HO ICING:

1 tsp. vanilla
3 c. powdered sugar
1 stick butter
3 blocks unsweetened chocolate
1 egg

Prepare and bake cake mix in large cookie sheet for 15 minutes. Beat next 3 ingredients for 15 minutes. Add next 3 ingredients and beat until fluffy. Spread on cool cake. Refrigerate until set. Use Ho Ho Icing. Ho Ho Icing: Melt butter and chocolate. Add remaining ingredients. Spread on top of cold cake and refrigerate