In a food processor, process the pecans and salt together to the consistency of coarse crumbs. You could also chop by hand. Mix in the softened butter until the crust mixture comes together.
Using your fingers, press the pecan crust into the bottom and sides of a pie pan until it's in one even layer. It helps if you get your fingers wet first. Bake the crust by itself until it turns a rich brown, about 10 to 15 minutes. When it's done, remove it from the oven and turn the temperature down to 350 degrees F.
Meanwhile, use an electric mixer to beat together the cream cheese and maple syrup until smooth. Add in the pumpkin pie spice and then one by one, add each of the eggs. Lastly, add the pumpkin puree and beat together just until mixed.
Pour the cream cheese mixture into the baked pie crust and stick it in the oven on 350 degrees F for 30 minutes. Lower the heat to 325 and bake until the edges of the cheesecake are puffed and begin to brown, about 10 to 15 minutes more. Put the pie in the fridge and let it cool completely for several hours before adding the whipped cream.
To make the whipped cream, use an electric mixer to beat the cream and syrup together until fluffy. Use a pastry bag or cookie press with decorating tips to decorate the pie. See the picture just below for how I used the whipped cream to cover up some cracks in the surface! Garnish with chopped pecans if desired.