Preheat oven to 350 degrees F (175 degrees C). In a medium bowl, combine graham cracker crumbs, butter and cinnamon. Mix well and press into the bottom of a 9 inch square pan. Bake in preheated oven for 8 to 10 minutes. Remove from oven and allow to cool.
Dissolve lemon gelatin in boiling water. Let cool until thickened, but not set. In a large bowl, beat cream cheese and vanilla until smooth. Blend in lemon gelatin. Fold in whipped topping.
Pour filling into crust. Sprinkle top with graham cracker crumbs.Refrigerate over night.
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