Sift the flour , cocoa powder ,baking powder and baking soda.
Cream sugar and oil .
Add vanilla essence and mix.
To this mixture add flour and mix well, it shall have a bread crumb like texture.
Add a teaspoon of milk and make a dough.
If the dough is crumby, add few drops of milk .
Pinch out small balls and place on a tray tray lined with baking paper.
Flatten the balls , sprinkle some colourful sprinklers and bake in a preheated oven at 180 degree C for 15 minutes or till the cookies turn golden brown around the edges.
Cool on a wire rack.