Preheat oven to 340 degrees F.

In medium bowl, mix together all ingredients for crust except oil. Add oil and mix well.

Into 8-inch deep tart tin, add crust mixture and press against bottom and sides. Using fork, pierce bottom of crust all over.

Bake crust 18-20 minutes. Let cool in tin.

In saucepan, combine all ingredients for chocolate layer and stir well as it comes to boil. Taste and add maple syrup, if desired. Continue to simmer, stirring, until mixture is completely dissolved, about 2 minutes. Pour mixture into cooled crust and let sit until set.

Repeat same process with ingredients for pumpkin layer. Pour pumpkin filling over set chocolate and smooth out with spatula. Refrigerate at least 2 hours, or until chilled through.

In mixing bowl, using hand mixer, beat solidified portion of chilled coconut cream into thick whipped cream. Add maple syrup and beat until thoroughly mixed.

With frosting piping bag, decorate tart with whipped cream. Lightly sprinkle cinnamon over top of tart.