Mix all ingredients together, if using fresh pumpkin then purée the pumpkin first so that it becomes nice and smooth. If using a food processor pulse all the ingredients together until smooth.
Pour mixture into an unbaked 9”pie shell. On lower rack of oven, bake at 450°F for 15 minutes, reduce heat to 300°F and bake for 40 minutes or until a toothpick inserted in middle comes out clean.
If adding decorations on top of pie, wait about 15 minutes until the top firms up a bit then add pastry decorations, if added too early the decorations may sink into the filling.
Serve with whipped cream or ice cream.