Whisk together the egg, and egg yolk in a small bowl. Pour this into the flour mixture and use a fork to blend until everything is starting to come together. Switch to your hands to bring the dough together in the bowl. On a dry day (winter heat) or if using a gluten free flour blend, you may need a bit more moisture to help this happen, so add a little water at a time as needed.
Transfer to a clean counter and continue folding until it is smooth and well blended. Divide into the sections, one slightly larger than the other, about 1/3 and 2/3. Shape into flat disks and wrap well with plastic wrap. Place in the fridge for at least 30 minutes to rest. This can be even made the day before. Remove to the counter and let it warm up while you prepare the apple filling.
Here is the link to my Salted Bourbon Caramel Sauce