Maryland Fudge Cake is a quick and easy cake. As much moist, chocolatey brownie as cake, dessert is ready in under an hour. Good without frosting, but great with it!
Beat together 2 teaspoons butter with the sugar and cocoa powder, until butter is completely incorporated. (I was impatient and ended up with flecks of butter in my icing the first time. So I didn't use it.) Pour in 1 1/2 tablespoons hot water/coffee. Beat until fluffy. Add more, teaspoon by teaspoon, if necessary. Pour onto cake and let set.
If using unsweetened chocolate in this cake, I recommend frosting. Frosting is optional if using semisweet chocolate.
Adapted from Food52