Man, this sounds Yummy!

THE BEST CHOCOLATE SHEET CAKE. EVER. (from The Pioneer Woman)

CAKE:

• 2 cups all-purpose flour
• 2 cups sugar
• ¼ teaspoon salt
• 4 heaping Tablespoons unsweetened baking cocoa
• 2 sticks butter
• 1 cup boiling water
• ½ cup buttermilk (or use this Pioneer Woman tip to make a buttermilk substitute: pour just under 1/2 cup regular milk into a measuring cup, then add enough regular vinegar to the milk to bring the quantity up to 1/2 cup–it will turn into buttermilk within seconds!)
• 2 large eggs, beaten
• 1 teaspoon baking soda
• 1 teaspoon vanilla

FROSTING:

• 1 3/4 stick butter
• 4 heaping Tablespoons unsweetened baking cocoa
• 6 Tablespoons milk
• 1 teaspoon vanilla
• 1 pound (minus 1/2 cup) powdered sugar
• 1/2 cup finely chopped pecans or walnuts, optional (Jane did not use nuts in her frosting and it was great…so if you don’t like nuts, leave them out!)

In a large mixing bowl, combine flour, sugar, and salt.

Melt butter in a saucepan and add cocoa. Stir together. Add boiling water, allow mixture to boil for 30 seconds, then turn off heat. Pour over flour mixture, and stir lightly to cool.

In a measuring cup, pour the buttermilk and add beaten eggs, baking soda, and 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 the icing. If using nuts, chop them finely. Melt butter in a saucepan. Add cocoa, stir to combine, then turn off heat. Add the milk, vanilla, and powdered sugar. Stir together. Add the nuts, stir together, and pour over warm cake. (NOTE: if you follow these directions, you’ll notice your frosting is still a little lumpy. To make her frosting really nice and smooth, Jane simply cooked the frosting several minutes longer over low heat, stirring until the mixture was smooth; she also omitted the nuts. You could also leave the nuts out of the frosting mixture and sprinkle them on top of the icing instead).

You can let the frosting cool and set before cutting into squares if you want, or cut into squares while it’s still warm and dig in!

As big as this sheet cake is, it disappears pretty quickly!

I found this on Pinterest