Preheat the oven to 350°F.
Grease and flour a 13"x9" cake pan or two 9" round pans.
Combine all of the dry ingredients in large mixer bowl.
Add the rest of the ingredients and beat at medium speed for 2 minutes.
Pour the batter (it will be thin) into prepared pans and bake for 35-40 minutes for the large pan or 30-35 minutes for the round pans.
Cool on a rack before frosting.
Add the vanilla to the melted butter.
Sift together the sugar, cocoa, and salt.
Alternate adding the dry ingredients to the butter mixture with the coffee. Beat the mixture until it's a spreading consistency - You may want to use less coffee or more cocoa depending on your flavor preferences!
Spread the frosting onto the cake and enjoy! It's even better served with vanilla ice cream!