In a mixing bowl combine graham cracker crumbs and melted butter-set aside
In a separate large bowl with an electric mixer, beat cream cheese until smooth
Add pumpkin puree, brown sugar, powdered sugar, lemon juice, vanilla extract, pumpkin pie spice and cinnamon
Beat on medium high until smooth
Fold in 8 oz. of the Cool Whip
Transfer pumpkin mixture and Cool Whip into pastry bags or in zipped baggie with corner clipped.
Press graham cracker crumbs into the bottom of parfait glasses
Layer pumpkin filling and Cool Whip , alternating layers
Top with more Cool Whip and sprinkle graham cracker crumbs on top
Refrigerate 2-3 hours -serve