Melt the butter, semi sweet chocolate, and coffee powder over medium heat.
Beat the sugars, eggs, and vanilla on high speed with a machine until light in color.Add in the melted chocolate mixture and mix on low speed.
Fold in the cocoa powder, flour, and salt. Then fold in the chopped chocolate.
Place the batter in a 22×22cm pan lined with parchment paper and bake for 22-25 min at 175C.
