Preheat oven to 350° F.
Line a 9X9 or 8X8 square baking pan with foil, leaving "handles" over the edges of the pan. Spray with non-stick cooking spray. Set aside.
In large bowl, prepare the brownies according to the package directions. Add 1/2 to 3/4 cup pie filling to batter and stir.
Pour into prepared baking pan and bake for 40 minutes or until toothpick inserted into center of brownies comes out clean.
Remove from oven and cool completely.
Cut into squares and serve with a spoonful of remaining pie filling and whipped cream on top.