Preheat the oven to 325°F (160°C).
Place ramekins in a large baking dish.
In a mixing bowl, whisk together pumpkin puree, heavy cream, granulated sugar, eggs, vanilla, cinnamon, nutmeg, and salt.
Strain the mixture through a fine mesh sieve into a separate bowl.
Evenly pour the pumpkin mixture into the ramekins.
Fill the baking dish with hot water until it reaches halfway up the sides of the ramekins.
Bake for about 40-45 minutes, until the edges are set but the center is slightly jiggly.
Let the ramekins cool at room temperature for about 30 minutes, then refrigerate for at least 4 hours.
Sprinkle brown sugar on top of each brûlée and caramelize with a kitchen torch.
Allow to cool for a minute, then serve.