Preheat your oven to 300°F.
Warm the heavy cream over medium heat until it's hot but not boiling.
In a medium bowl, whisk the egg yolks and sugars until frothy and lemon-colored.
Slowly add the hot cream, whisking constantly to avoid cooking the yolks.
Stir in the vanilla extract, cinnamon, nutmeg, and pumpkin puree until smooth.
Strain the mixture through a fine sieve into a large bowl to ensure a silky texture.
Divide the mixture into eight 4-ounce ramekins, placing them in a large baking dish.
Add boiling water to the baking dish until it reaches halfway up the sides of the ramekins.
Bake in the preheated oven for 35-40 minutes, or until the centers are just set.
Refrigerate for at least 2 hours before serving.
Sprinkle sugar evenly on top and caramelize it with a torch just before serving.