Preheat oven to 350 degrees Fahrenheit (180 degrees Celsius). Grease an eight-inch (20-centimeter) square pan.

Melt chocolate and butter over low heat in a small saucepan. Stir occasionally. When the mixture is smooth, remove from heat and set aside.

Beat eggs and vanilla in a medium bowl. Add the melted chocolate mixture and whisk to combine (mixture will thicken). Add the remaining ingredients and stir with a spatula or a wooden spoon.

Pour the batter into the prepared baking pan. Smooth the top and bake for about 20-25 minutes, until set.

Beat cream cheese and butter for two to three minutes, scraping down the sides of the bowl occasionally.

Sift cocoa, sugar, and salt into the creamed mixture.

Combine coffee granules with brewed coffee and vanilla and add to the bowl. Beat until combined and smooth.

Spread over cooled brownies, or decorate using a pastry bag.