The frosting is made by melting 3 TBSP margarine, then adding 3 TBSP sugar (white or brown), and 3 TBSP of cocoa. Mix this all up and add 3 TBSP of sour cream. Stir and add 1/2 c. to 1 c. of powdered sugar depending on how thick and sweet you want it. Stir or whisk until all the lumps are gone and you are left with creamy chocolately goodness!
The finished frosted cookie. Yummo! This frosting is also very good on brownies and cake!