Yes, feel free to change it up and use a homemade pie filling. These delicious baked cinnamon apples make a wonderful pie filling, and they're even gluten-free. Baked apples are easy to make, and they generally taste better than a canned pie filling. In my opinion, the fresher the apples, the better your pie filling will taste. My favorite varieties include Honeycrisp, Jonathan, Jonagold, and Granny Smith.