Melt butter and mix with crumbs. Mix Dream Whip according to directions on package and add sugar. Add cream cheese to Dream Whip mixture and beat together. Line dish with 1/2 crumbs. Add 1/2 whipped mixture, put blueberries on top of this, add rest of whipped mixture. Put rest of crumbs on top.
May substitute other varieties of Pie Filling, but Blueberry is my favorite.