For a BIG cake (3 or 4 larger layers), increase the following ingredients to 1 1/2 recipe.
Step #1
In a large bowl, thoroughly mix together the following ingredients:
2 cups all-purpose flour
2 cups granulated sugar
1 teaspoon salt
Step #2
In a medium saucepan, combine the following:
1 cup water
2 sticks (1 cup) butter (The 3 butter sticks in the picture indicate the 1 1/2 recipe quantity.)
3 tablespoons cocoa powder (like Hersey's)
Step #3
2 eggs (slightly beaten)
1 teaspoon baking soda
1/2 cup buttermilk
2 teaspoons vanilla
Pour the buttermilk into a small mixing bowl. Add the baking soda, stirring it into the milk. Allow this to sit for approximately 2-5 minutes, until the soda and buttermilk have increased in volume. Thoroughly stir in the vanilla and eggs. Next, thoroughly, mix the Step #3 wet ingredients into the previously combined ingredients from Step # 1 and #2.
Grease and lightly flour three, round cake pans. (You may use Pam and the flour dusting.)
Preheat oven to 350 degrees. Evenly distribute the cake mixture into the 3 pans.
Bake in the preheated oven for 20 minutes (or slightly more, depending on your oven). A toothpick inserted in the middle of a layer should come out clean. Cool completely before icing the cake.
ICING:
(If you are making the bigger version, increase the ingredients below to 1 1/2 quantity.)
1 stick butter - softened
3 tablespoons cocoa powder
2 teaspoons vanilla
1 box (or more) powdered sugar
Milk to make spreadable.
(Blend all together thoroughly - adding additional powdered sugar and/or more milk to reach a fairly thick, but spreadable, icing.)
Select a cake plate. Work with one layer at a time, adding icing between each layer. Ice the top and sides until the icing covers the entire cake. Leave the iced cake uncovered for, approximately, one hour before serving. This step allows the icing to set.