Cream shortning and sugar in large bowl. Blend in vanilla and eggs.
In a small bowl, combine flour, baking powder, salt, and 1 tsp cinnamon. add to creamed mix and beat well.
Turn dough onto a sheet of waxed paper. Spread dough into a 9 by 6-inch rectangle. Sprinkle 4 tbsp cinnamon mix. Roll up jelly roll style into a log. Dust log with remaining sugar. Wrap tightly in plastic wrap. Refrigerate 4 hours or overnight.
Heat oven to 375. Spray cookie sheets with pam spray.