Prepare and blind bake a 9” pie crust*. Set aside.
9" pie crust
Place an oven rack in the center position. Heat the oven to 350° F.
In a small bowl, mix the ground flaxseeds and milk together. Set aside and let the flaxseeds hydrate as you prepare the other filling ingredients.
3 TBS ground flaxseeds, ½ cup milk
Place the pumpkin puree and maple syrup in a small saucepan. Cook over medium heat. Once the mixture starts to bubble, lower the heat down to medium low. Cook for 5 - 7 minutes, stirring frequently.
2 cups pumpkin puree, 1/2 cup maple syrup
Let the mixture cool for a couple minutes, then add all the flaxseeds and milk mixture, pumpkin spice, vanilla, and salt. Mix everything together well.
2 tsp pumpkin spice mix, 2 tsp vanilla, ½ tsp kosher salt
Pour the prepared filling into the pie crust. Smooth it into an even layer inside the crust. Bake in the heated oven for 50 minutes.
Let the pie cool for at least two hours on a wire rack. When cooled, serve with whipped cream.