Preheat the oven to 350 degrees(F).
In a large mixing bowl, stir together the graham cracker crumbs, the vegan butter and the brown sugar. The crumbs should be moist and hold together if pressed together.
Pour the graham crackers into a standard 9 inch pie pan. Press down the crumbs evenly all around the pan to form the crust. I like to use a cup to press them in firmly.
Bake the crust for 10-15 minutes or until the crust is firm and very brown. Remove and let the crust cool completely.
While the crust cools, make the filling. Using a hand mixer or stand mixer, combine the vegan cream cheese, pumpkin, powdered sugar and vanilla. Mix together until fully combined.
Now fold in the vegan whipped topping, cinnamon, salt and nutmeg. Fold gently until fully combined.
Once the crust has completely cooled, scoop the filling into the crust, smooth it out, then place in the fridge.
Chill for at least 4 hours, but overnight is best. Serve with extra whipped topping or spices. Keep refrigerated.