Fat-free, sugar-free, low-calorie, AND vegan!! This recipe came about when I was looking for something a little different to do with some apple pie filling, and for a sugar-free muffin recipe that didn't have any added artificial sweeteners. (Yes, the pie filling is sweetened with Splenda, but that wouldn't affect the texture of the final product the way adding Splenda would.) I used a kitchen scissors to chop the apple slices from the pie filling into smaller pieces. Try to get all of the goo from the pie filling in there, too - don't just throw it out! If you overmix, it will probably be tough; that's why I chose to mix it by hand, though of course you could use an electric mixer if you prefer. I used a jumbo-sized muffin pan, and I got six nice-sized muffins - for less than 150 calories each!