In a large bowl, whisk together the pumpkin, eggs, milk and vanilla. In another bowl, stir together the coconut sugar, cornstarch, spices and sea salt.
Sift sugar mixture into the pumpkin mixture. Stir batter with a whisk until combined well.
Pour into four 3/4 cup custard cups. Place cups in a 9 x 11-inch baking pan and add enough warm water to come halfway up the sides of the cups.
Bake for 50 minutes, or until set and lightly browned. Transfer cups to a wire rack to cool.
Top with a little whipped cream and sprinkle with cinnamon. Chopped toasted pecans are also a great addition.
The trick to achieving a nice, creamy texture is sifting the sugar mixture well before adding it to the wet mixture.
The water bath is important! It increases the moisture in the oven, which helps keep the custard from cracking and prevents the surface from cooking quicker than the center.
For the best results, do not open the oven during baking, or you'll lose heat and moisture, which can cause the custard to crack.