In blender or food processor (a stand mixer or hand-held beater works well, too), combine all of the ingredients (except the crust, of course!). Stir just enough to incorporate the spices, and then blend or process until the ingredients are thoroughly combined, scraping down the sides as needed. Stir by hand a few times to remove any air bubbles.
Pour the filling into the crust that has been pre-baked according to the recipe directions. (I often use the above-linked *almond crust recipe,* pre-baking it for 10 minutes at 350 degrees F. To keep the edges of a crust with nut flour from becoming too dark, I recommend a foil “crust protector.” See notes.)
Bake the pie at 350° for 35-45 minutes or until the center is set but still the slightest bit jiggly. (Precise time will depend on the oven and the type of puree used. Some purees are thicker than others, and less moisture will tend to result in a shorter cooking time.) Let cool completely, and then refrigerate for at least 2 hours to fully set. Serve cold or at room temperature, with a dollop of whipped cream, if desired.
I think this pie tastes even better the second day. Wrapped well and refrigerated, the pie will keep for one week.