Preheat the oven to 350 degrees, and grease a 9x9 baking dish.
Blend together the ingredients for the crust, and press into the prepared baking dish.
Bake for 12 minutes.
While the crust is baking, add the butter, brown sugar substitute, heavy whipping cream and cinnamon to a pot over medium heat on the stove.
Once the butter and sugar have melted, and the mixture is almost boiling, add a bit of the hot mixture to the eggs in a bowl, whisking constantly.
When the eggs are tempered, stir them into the mixture, and simmer for a few minutes.
Remove the mixture from the heat, and stir in the vanilla and pecans.
Pour the topping over the crust, and let cool to room temperature. Slice and serve, or chill before serving if desired.