Break the shortening into small lumps and add to the flour.
Using a fork, cut in the larger-sized pieces of shortening until you have some small lumps (pea-sized or smaller) dispersed through the flour.
Add iced water one tbsp at a time and mix with the fork until the dough comes together in a ball.
Divide the dough into half, shape into discs, cover with plastic, wrap and refrigerate.
For the filling:
Mix all the ingredients for the filling together and set aside for about 15 minutes, turning them around once in a while so the apples soften which will make it easier to fit them inside the pie pan.
To assemble the pie:
Take one of the discs of the pie dough and, working on a floured surface, roll out to slightly wider than the diameter of a 9-inch pie plate. Turn the crust often while rolling to ensure it doesn't stick.
Transfer the crust to a pie plate. Refrigerate while you get the rest of the pie together.
Now roll out the other crust and, using a pizza cutter, cut into 10 strips.
Remove the refrigerated pie crust (in the pie plate and pour the apple filling into it, adjusting with a ladle to ensure it is evenly spread.
To form the lattice, place half the strips across the pie, at roughly one-inch intervals. Fold back alternate strips and place a strip across those already in place. Unfold the alternate strips, fold back the remaining strips, and place another strip across the pie. Continue doing this until you've used up all the strips.
Using your fingers, pinch together the overhanging dough at the edge of the plate. You can try your hand at making a prettier edge by pressing down the edges with the tines of a fork.
Brush the top of the pie with a mixture of 1 tbsp maple syrup and 1 tbsp soy milk. This gives the pie a lovely glaze when Bake.
Place in a preheated 425-degree oven and bake for 30 minutes.
Slide a baking sheet under the pie and reduce the oven temperature to 350 degrees. Continue to cook for another 30 minutes until you see juices bubbling through the lattice.
Remove and cool thoroughly on a rack before cutting into wedges. It will take about 3-4 hours for the pie to cool completely.