No buttermilk on hand? Before you do anything else, measure out an equal amount of regular milk and stir in a tablespoon of vinegar or lemon juice - by the time you need it, it will be ready to go!
Prep Time15 minutesmins
Cook Time30 minutesmins
Total Time45 minutesmins
Servings: 9to 12
Author: Donalyn Ketchum
Ingredients
The Cake
1&1/2 cups all purpose flour
1/2cupnatural baking cocoa
1cupgranulated sugar
1teaspoonbaking soda
1/2teaspoonsalt
1cupbuttermilk
1/3cupwater [you can use coffee if you like]
1/3cupbutter
1teaspoonvanilla
1egg
The Frosting
1/2cuproom temperature butter
2 to 2 1/2cups10x [confectionery] sugar
about 1 tablespoon heavy creamhalf and half or milk
1teaspoonvanilla
Instructions
Make the Cake
Preheat the oven to 350º and generously butter an 8 x 8 baking pan.
In a large bowl, whisk together the flour, baking cocoa, sugar, baking soda and salt.
In a 2 cup measure, or small glass bowl, measure in the buttermilk and water, and add the butter, but into a few pieces.
Microwave for a minute or long enough to warm it enough to melt the butter. This will vary, depending on your microwave, but you just want it warm enough to melt the butter - not boiling. Once it is warm, stir to combine.
Stir the vanilla into the buttermilk.
Pour the buttermilk into the flour.
Break the egg into the now empty measuring cup or bowl and beat lightly - pour the beaten egg into the rest of the ingredients in the bowl.
Stir together with a wooden spoon or a rubber scraper, until well combined.
Spread the batter evenly in the prepared pan and bake for about 25 minutes, turning once, halfway through the baking time.
At 25 minutes, begin checking for doneness, by inserting a wooden skewer or toothpick near the center - it should come out with some moist crumbs, but no wet batter. If it's not quite done, return to the oven for another 2 minutes, and check again to see if it's done. If not, bake another 2 minutes and check again. It is easy to over-bake a chocolate cake, so stay close, and go by how the crumbs look more than the time.
Cool the cake on a rack, right in the pan. If frosting, cool completely, but it is nice served still warm with vanilla ice cream or whipped cream.
Make the frosting
Using an electric hand mixer and a medium bowl, cream the butter for 30 seconds or so.
Add 2 cups of 10x sugar, the cream and the vanilla, and beat on low speed until it is a creamy and smooth consistency.
If it is too stiff, add more cream, a few drops at a time, if it is too loose, add more sugar, a few tablespoons at a time. The exact proportions depend on the dryness of your sugar and how soft the butter is - just keep fiddling with it until it is spreadable, but stiff enough to form peaks when you spread it.
When the cake is completely cool, spread the buttercream frosting evenly over the top. To serve, cut in squares.
Will keep at room temperature, tightly covered for 2 days - after that, refrigerate.