Make the pumpkin mixture: Add the pumpkin puree, Greek yogurt, mascarpone cheese, vanilla extract, coconut sugar, cinnamon, and nutmeg to a large mixing bowl.
Mix until smooth: Using a hand mixer or whisk, blend the ingredients until smooth and creamy.
Assemble the parfaits: Divide the pumpkin mixture evenly between 6 serving glasses or jars.
Chill: Cover and refrigerate for at least 30 minutes, or overnight if preparing ahead.
Add the toppings: Just before serving, drizzle each parfait with honey and top with dark chocolate chips and chopped hazelnuts.
Serve: Enjoy chilled as a simple fall breakfast, snack, or dessert.
