Melt 2 tablespoons of butter in a skillet over medium heat.

Add the zucchini to the skillet along with 3 tablespoons of Swerve brown sugar substitute. Stir to combine and coat the zucchini until the sugar substitute has melted.

Sprinkle the apple pie spice and ¼ teaspoon of cinnamon over the zucchini, then stir to combine well. Continue to cook the zucchini until it begins to soften.

While the zucchini is cooking, mix together the ingredients for the crumble, then set aside.

Add the ingredients for the whipped cream topping to a mixing bowl, then beat until soft, stiff peaks have formed.

Assemble the parfaits by placing a layer of crumble in the bottom of a jar or glass, followed by a layer of whipped cream topping, a layer of apple pie filling, and a final dollop of whipped topping to finish. Sprinkle with some cinnamon for garnish if desired.