Preheat oven to 200C
Mix 2 tbsp egg replacer with 6 tbsp water. Wisk and keep it aside.
Sift the flour, baking soda, and salt.
Cream the butter along with granulated sugar, brown sugar, and vanilla in a large bowl with mixer until creamy.
Add the egg replacer mix, beat again.
Now add the flour mixture and combine again.
Next, add the cocoa powder and stir in chocolate chips and mix well. Chill for 30 mins.
Line a baking tray with parchment paper, scoop out small balls of the dough and place with enough space on the baking tray.
Bake at 200C for 10 mins. Mine was not done, so I turned the cookies to the other side and again baked for 10 mins.
Please check the cookies and bake as per need. Remember cookies harden after cooling.