In 1992, Darlene and I ( my late wife) baked this at "Friends of Old Deserret" 24th of July cook-off. It took a place, but I don't remember if it was 1st or 2nd. We did it in a single layer. I noticed that a lot of cakes were baked at W.C.C.O. this year. I will give this one to you to day, and maybe it will be a winner for you.
1 cup margarine ( I use butter now, but this is how we did it then)
6 level tablespoons of cocoa powder
1 cup hot water
2 cups flour
2 cups sugar
1/2 teaspoon salt
1/2 teaspoon baking soda
1/2 cup buttermilk
Melt margarine and cocoa in a 6" Dutch oven. ( saucepan it knot in competition). Add water and boil for 2 minutes. Mix In mixing bowl; mix flour, sugar, salt, and baking soda. Add cocoa mixture into flour mixture, and add eggs, milk, and vanilla. Whisk or beat for several minutes until creamy. Batter will be thin. Prepare a 10" Dutch oven with parchment and spray with Bakers Joy. Pour into prepared oven and bake until tooth pick comes out clean. 350°f. for about 30 minutes. 8 charcoals on the bottom. 14 on top.
1/2 cup margarine
6 level tablespoons cocoa powder
1/3 cup milk
1 package (16 oz. ) powdered sugar
1/2 teaspoon vanilla
Melt margarine and cocoa in 6" or 8" Dutch oven ( saucepan if not in competition ). Add milk and boil until it thickens and separates. Add sugar and mix until creamy. Stir in vanilla.
This was originally done as a single layer, but now I cut it in two layers. Frost the bottom layer with marshmallow cream, sprinkle with pecans or walnuts. Add second layer and frost with original frosting.