Preheat oven to 350°F. In a large bowl, combine cake mix, 1 cup oats and ... spread with pie filling. Sprinkle with reserved crumb ... or cherry pie filling.
Mix all ingredients together in ... layer. Add pie filling between each layer. After completely icing completed cake, pour remaining pie filling on top of the cake.
Heat oven to 350 degrees. ... large bowl, combine cake mix, 1 cup oats and ... spread with pie filling. Sprinkle with reserved crumb ... cherry filling if desired.