This adorable dessert offers all the flavors and aroma of a warm apple pie, pre-portioned into single-serve treats. Each apple is filled with homemade pie filling and topped with a swirl of pecan-oat crumble. The combination is so good it will have you licking the spoon. Though other varieties of crisp apples work in a pinch, we prefer Honeycrisp because they hold their shape when baked. As far as the crust goes, we love a traditional lattice, but feel free to get creative with all sorts of designs. We recommend serving the whole thing a la mode.