Mix flour, salt, sugar and cinnamon in the food processor. Add butter and crisco and blend using on/off method. Mix water and egg yolk in a small bowl. Add through feed tube while food processor machine is running. Use on/off method to combine mixture.
Form dough into a ball by hand. Wrap and chill for 30 minutes. Roll out dough between 2 sheets of wax paper and fit into a 10" false bottom tart pan. Prick dough and line with buttered aluminum foil. Fill pan with pie weights.
Pulverize almonds in the food processor. Add sugar and egg yolks and process until thick and pale yellow. Blend in cinnamon and salt. Remove mixture to a medium bowl.
Shred the apples using shred disc in same food processor bowl just used for almond mixture. Combine shredded apples with the almond mixture in the bowl.
Pour mixture into the tart pan and bake in a preheated 350 degree oven for 20 minutes. Carefully stir butter into the filling to incorporate. Raise the oven temperature to 375 degree and bake tart for another 20 minutes.
Cool until warm. Reheat, if prepared in advance. Top with vanilla ice cream with a dash of cinnamon or whipped cream flavored with vanilla extract, Calvados (apple flavored) or Amaretto (almond flavored) liquer.