Pre-heat the oven at 185 C and line a parchment paper over a baking tray.
In a small bowl, whisk the egg replacer with water and keep it aside.
In a mixing bowl, whisk together the flour, cocoa powder, sugar, baking powder and salt. Then, add the butter and crumble well.
Stir in the chocolate chips and combine everything together and add milk slowly.
The dough should be little stiff, you can roll it again with little flour and shape it as circle. I made small discs and made mini scones.
Bake for about 18-20 minutes or until they are firm around the edges but a bit soft in the center. A toothpick inserted into the center of a scone will come out clean. Cool on a wire rack.