Bake cookies according to package directions. Set aside to cool
Meanwhile, combine the dessert topping and sour cream. Stir in the shredded orange peel. Cover and chill until serving time.
To assemble, place a cookie on each of 4 dessert plates. Top each cookie with one-fourth of the berries; top with one-fourth of the sour cream mixture (about 1/4 cup) and another cookie. If desired, sift cocoa powder lightly over each and garnish with mint. Makes 4 servings.