Make a crumble mixture of the dry ingredients by cutting in butter. Put half of mixture in a pan. Add the pie filling and then top with remaining mixture. Sprinkle with cinnamon. Bake at 350 degress for 35 minutes. Can be serve warm or cold. A favorite variation of this recipe: I use one can of apricot pie filling and 1 can of pears or apple pie slice. The apricots add a nice tartness to the recipe.