If you are going to use homemade pumpkin puree and homemade pie crust make those things ahead of time as well (just don't bake it before putting the pie filling in!)
Preheat your oven to 350 degrees.
In a small bowl mix cinnamon, pumpkin pie spice and salt together with a whisk and set aside.
In a large bowl whisk the eggs. Once the eggs are whisked add in the pumpkin puree and mix well.
Next add in the heavy cream and mix well.
Then add in the maple syrup and mix well.
Lastly add in the cinnamon, pumpkin pie spice and salt mixture and mix well.
Spray your pie dish with non stick cooking spray. Place the pie crust into the dish.
Then carefully pour the pie mixture into the pie crust.
Bake your pie at 350 degrees for 60-70 minutes. You will know it is done when it passes the jiggle test and/or your can use the knife test. Just stab the center of the pie with a knife and it will come out clean if the pie is finished baking.
Place the pie on a cooling rack for 2 hours to cool and set.