Pioneer Womans Chocolate Sheet Cake ~ recipe

Thought it easiest to post the recipe here as a coupe of Kiwi friends have asked for it.
I really do love this version, it's easily & quickly hand mixed - so there are no mixers or beaters to clean afterwards.

Pioneer Woman Chocolate Sheet Cake
Combine in a mixing bowl:
2 cups flour
2 cups sugar
1/4 teaspoon salt

In a saucepan, melt:
2 sticks butter
Add 4 heaping tablespoons cocoa. Stir together.
Add 1 cup boiling water, allow mixture to boil for 30 seconds, then turn off heat. Pour over flour mixture, and stir lightly to cool.

In measuring cup, pour 1/2 cup buttermilk. (Check out the back up plan for buttermilk at the bottom - it works perfectly)
Add:
2 beaten eggs
1 teaspoon baking soda
1 teaspoon vanilla
Stir buttermilk mixture into butter/chocolate mixture. Pour into sheet cake pan and bake at 350-degrees for 20 minutes.

While cake is baking, make icing:
Chop 1/2 cup pecans finely.
Melt 1 3/4 sticks butter in a saucepan.
Add 4 heaping tablespoons cocoa, stir to combine, then turn off heat.
Add:
6 tablespoons milk
1 teaspoon vanilla
1 lb minus 1/2 cup powdered sugar
Stir together.
Add pecans, stir together, and pour over warm cake.

Cut into squares, eat, and totally wig out over the fact that you’ve just made the best chocolate sheet cake. Ever.

PIONEER WOMAN BACK-UP PLAN: Living way out in the country, I often find myself missing key ingredients for many recipes and have had to learn to improvise. I usually don’t have buttermilk in the fridge when I want to make this cake, so here’s what I do: pour just under 1/2 cup regular milk into the measuring cup, then add enough regular vinegar to the milk to bring the quantity up to 1/2 cup. Within seconds, it turns into buttermilk and works perfectly. Try it sometime!