Thaw the phyllo dough overnight in the refrigerator
Melt the vegan butter & reserve
Peel & core the apples then small dice to approx ¼-½" pieces
In a large mixing bowl combine the apples, lemon juice, cornstarch & spices and toss well to coat everything, Then add the walnuts & cranberries & toss again
On a large kitchen towel approximately 12" X 18" similar size of a half sheet pan, lay out 3 pieces of phyllo dough, brush with melted butter ~sparingly! Then sprinkle with about 1 Tbs cinnamon sugar *see video visual
Next layer with 4 pieces of phyllo dough & repeat the butter/sugar
best to lay it out as 3 pieces of phyllo 1 way, then 4 pieces of phyllo the other way repeating each layers with vegan butter/sugar until all the dough is gone *see video
Pile the apple mixture onto the center of the dough forming a log then roll up the dough using the towel to guide the roll, fold the sides of the dough into the center keeping a nice tight roll
Brush the top with remaining melted butter & a sprinkling of cinnamon sugar then bake in a preheated 375°F oven for 30minutes, turning the oven temperature down to 325°F & bake for another 15 minutes. The pastry will be nice & golden brown and crispy
You may see some bubbling seep out at some areas on the side of the strudel and this is a good indicator that the strudel is done, be careful not to over bake or you will have apple sauce filling!
Cool on the pan out of the oven for at least 10 minutes before serving or it will be too hot to cut
While the strudel is baking you can prepare the optional vanilla custard sauce or serve with vanilla ice cream!