Chocolate cookies with a rich chocolate frosting work together to create a decadent Dirty Chocolate Cookie!
Add the flour mixture to the sugar mixture and stir. (Can also use a hand held mixer) It will be a dry mixture.
Scoop out the dough onto a parchment lined baking sheet. Cookies will spread, so be sure to place them at least 2 inches apart. (I used a measuring scoop that holds about 2 1/2 tablespoons of batter.)
Place some sugar in a small bowl or plate and dip the bottom of a glass into the sugar and press the cookie down. (I sprayed the glass with non-stick spray the first time, you only need to spray it once.)
Bake 8-10 minutes or until tops are just dry. Let cool on pan for a few minutes so that you can move them to a cooling rack without breaking them.
Spread over cookie using an offset spatula or butter knife.