In another bowl, mix reserved 1/2 cup crushed cereal with topping ingredients. Measure 1 tablespoon cookie dough; flatten in the palm of your hand. Place 1 of the refrigerated truffles in center of dough, and wrap dough around truffle, covering completely. Roll dough in topping mixture; place 2 1/2 inches apart on ungreased cookie sheet. Flatten dough balls slightly.