In a medium bowl, sift together the flour, cocoa powder, baking soda and salt.
In a large bowl, cream together the butter, white sugar and brown sugar until light and fluffy.
Beat in the egg and vanilla extract.
Gradually beat in the sifted ingredients.
Drop teaspoonfuls of dough onto the prepared cookie sheets.
Bake for 10 to 12 minutes in the preheated oven. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
Chocolate-Doodles are a classic cookie that has been around for many decades.
These cookies are popular in the United States and around the world.
The cocoa powder used in these cookies gives them a rich and intense flavor.
The cookies can be stored in an airtight container for up to two weeks.