Preheat oven to 350 degrees. In a large bowl, mix together angel food cake mix (just the dry mix - don't add anything!) and blueberry pie filling.
Put it in a buttered 9" x 13" pan and bake 35 minutes, or until top is a deep golden brown.
Serving suggestions: Good on a Sunday morning with a cup of coffee, or as a dessert alongside a scoop of coffee ice cream (blueberries and coffee ice cream are a great combination). Also, you can use other pie fillings like cherry or apple.