Preheat the oven to 350 degrees F. Grease a 9-inch pie plate with cooking spray.
Make the Empower Bar crust. Transfer the Empower Bar Baking Mix into a large mixing bowl. In a separate small bowl, whisk together the beaten egg and melted coconut oil until blended and creamy.
Pour the egg and coconut oil mixture into the bowl with the baking mix. Using a large whisk or spatula, blend until a dough is formed. Using your hands, gather the dough into a ball.
Place the ball of dough between two sheets of parchment paper. Using a rolling pin, roll the dough out into a large circle, about 1/4-inch thick. If you don't have a rolling pin, you can use a wine bottle or use your hands to flatten so it would cover the bottom surface of the pie plate.
Peel away the top layer of the parchment paper, and carefully flip the crust onto the greased pie plate. Use your fingers to smooth the dough to fix any cracks or broken edges. Set aside until ready to use.
Make the pumpkin pie filling. In a high-speed blender or food processor, mix the coconut milk, maple syrup, pumpkin puree, coconut sugar, arrowroot starch, pumpkin pie spice, and vanilla extract. Blend until creamy. If you don't have a blender or food processor, you can whisk everything by hand in a large bowl.
Transfer the pumpkin mixture to the pie plate with the crust. Bake for 45 to 50 minutes until edges are golden brown and the filling looks set (the surface should have cracks and be slightly firm to the touch. It will firm more as it cools). Allow the pie to completely cool, about 2 hours, at room temperature. Transfer to the refrigerator for at least 6 to 8 hours or ideally overnight to completely set.