Preheat the oven to 400°F. Have a 9" pie plate prepared with a grain-free pie crust.
Place all of the pie filling ingredients in a high power blender, I use my Vitamix. Blend on high until everything is combined.
Pour the mixture into the un-baked pie crust. Place the pie plate on a baking sheet to catch any potential spills. Bake for 15 minutes.
Keeping the pie in the oven, turn the temperature down to 350°F. Bake for 50-60 more minutes. To test to see if the pie is done, insert a knife twice into the center of the pie, making an X shape. The center should not be gooey or jiggly.