A food processor can be used for even easier preparation. Place cookie base ingredients in processor bowl; pulse until crumbly. Reserve 1 cup for topping. Press remaining cookie base mixture in pan. Place filling ingredients in processor bowl; pulse until well blended. Continue recipe as directed.
To drizzle the toppings easily, place each topping in a small food-storage plastic bag, snip off a small corner of each bag and squeeze to drizzle toppings over bars.