Preheat the oven to 350 F (180C). Line a baking sheet with parchment paper.
Melt the chocolate on bain marie. Meanwhile in a large bowl add the butter and sugar and mix well until creamy. Add eggs one at a time and mix well until incorporated.
Mix in the coffee, vanilla extract and melted chocolate. Add cocoa powder, flour and baking powder and mix again to combine. Set aside to prepare the cream cheese batter.
In another bowl mix well the cream cheese with egg, sugar, orange zest and orange juice.
Pour the chocolate batter into the prepared baking sheet. Place spoons of cream cheese batter on top of it. With a knife create swirls to get the marble effect.
Bake for 20-25 minutes. Let cool at room temperature. Cut it simple in bars or any other shape you prefer using pastry cutters. Enjoy!