This is the recipe I have and my directions don't specify what goes where either.

Preheat oven to 375 degrees. Sift flour and sugar, set aside. In a saucepan, bring the margarine, cocoa and water to a boil; remove from heat. In a large bowl, mix all remaining cake ingredients. Add the flour mixture and cocoa mixture, stirring well. Bake in a greased and floured 9x13" pan for 20 to 30 min. Check for doneness with a clean toothpick. Ten minutes into the baking of the cake, prepare the frosting. Place the margarine, cocoa, and milk in a saucepan and bring to a boil. Remove from the heat and add the remaining ingredients. Beat until smooth. Frost The Cake As Soon As It Come Out Of The Oven. Let it cool a little before cutting, if you can't possible hold out!. This cake is so good, you'd eat it with one foot in the fire if you had to.

From the MasterCook recipe list. Downloaded from Glen's Mm Recipe Archive,