Well it worked better than I expected--a perfect pumpkin pie without the soggy, slightly bitter taste of pie crust.
But it gets better! We made whipped cream with maple syrup for topping--a half pint (1 cup) of whipping cream, whipped up, and then drizzle in 1/4 cup (4 Tbsp.) real maple syrup.
And the pièce de résistance? Maple candied pecans! About a third of a cup of roughly chopped pecans toasted in a dry frying pan, then add a tablespoon of butter and stir and melt, and about 2-3 Tbsp. real maple syrup, stirred and cooked for a few minutes till it begins to caramelize. Then pour onto a plate covered with wax paper and refrigerate till crisp.
The crispiness of the pecans more than makes up for the lack of any crust. Perfectly balanced, and somewhat healthy at least. And it's gluten-free!