In medium saucepan, combine brown sugar, granulated sugar, cocoa powder and milk. Over medium heat, bring to a boil, stirring, until sugar is dissolved. Pour into bowl; stir in vanilla, add oatmeal, coconut, cherries and walnuts if using. Cool to room temperature (about 1 hour). Shape into 1 1/2" balls. Roll in icing sugar. Store in airtight container in single layers between waxed paper.
Added on 6 September 2007.