1. In a medium size bowl, melt the bittersweet chocolate and butter together. 2. Add in the brown sugar and sugar. Mix in the eggs and vanilla and mix until very well combined. 3. Add in the flour, cocoa powder and baking powder then fold in chocolate chips. Using a medium size scoop onto a parchment lined baking sheet.4. Bake at 350 degrees for 8-10 minutes.