Pre-heat oven to 350°, prep 9 x 13 pan with buttered parchment or line with foil and spray.

In a bowl, whisk tog flour, sugar, cocoa, coffee, b. soda and salt.

Add boiling water and melted butter umtil well blended.

Add the buttermilk, eggs and vanilla.

Pour into the prepped pan and bake for approx. 30 minutes. Do a toothpick test.

For the frosting, in a saucepan, heat the butter, cocoa and buttermilk until boiling. Add the powdered sugar and stir until smooth.

Pour the frosting over the hot brownies and let cool or eat it warm.