Heat oven to 400. Grease pie plate, 10 x 1 1/2". Beat all ingred. except pie filling and Streusel until smooth, 15 sec. in blender on high or 1 min. with hand beater. Pour into plate. Spoon pie filling evenly over top. Bake 25 min. Top with Streusel. Bake until streusel is brown, about 10 min. longer. Cool; refrig. any remaining pie. STREUSEL: Cut margarine into Bisquick, brown sugar and cinnamon until crumbly. ~-