Gather all ingredients on a clean surface.

In a medium bowl, whisk together pumpkin puree, brown sugar, cinnamon, nutmeg, and vanilla extract until smooth.

In another bowl, whip mascarpone cheese with an additional tablespoon of brown sugar until light and airy.

Crush graham crackers into fine crumbs and reserve some for topping.

In clear glasses or jars, layer parfaits starting with graham cracker crumbs, then pumpkin filling, followed by the mascarpone mixture. Repeat until filled.

Chill in the refrigerator for about an hour before serving. Top with reserved graham cracker crumbs for garnish.