Line a cookie tray with baking paper/parchment. Pre-heat the oven to 170 degree C.
Combine the flours, cocoa powder, sugar, baking powder, and baking soda together in a bowl.
Add the melted butter, milk and half of the chocolate chips and bring it together to form a soft dough.
If the dough feels dry, add 1-2 tsp of milk.
Cover the dough and leave it in the fridge for 10 minutes.
Remove the dough and make equal sized balls with it. Flatten slightly and place them on a baking tray leaving enough space between each. Top with the remaining chocolate chips or walnut pieces.
Bake at 170 degree C for 10-12 mins. The cookies will be very soft when you take them out of the oven. Do not attempt to pick them or they will break. Let them cool for 10-15 minutes, then enjoy your cookies.
Store airtight for upto 4-5 days.