Place egg yolk and egg in medium bowl and beat gently. Slowly pour in the whipping cream, whisking into eggs as you pour.
Gradually add pumpkin puree and vanilla, whisking to incorporate. In a small bowl, combine 2 tablespoons sugar with pumpkin pie spice.
Stir dry ingredients into liquid mixture.
Fill two shallow ramekins with mixture and set on floor of 6-quart slow cooker.
Pour water carefully around ramekins until it reaches halfway up the sides of the ramekins, being careful not to get any water in filled dishes.
Put lid on slow cooker and cook on low 2 – 3 hours until brulee is set but still trembling in the center. (My ramekins took 2 hours but slow cookers vary).
Remove ramekins from slow cooker to wire rack and cool to room temperature.
Refrigerate until firm, at least 2 hours and up to 3 days.
To serve, remove the creme brulee from the refrigerator 30 minutes prior to browning the sugar on top.
Spread 1 tablespoon sugar evenly on top of each ramekin. Using a culinary torch, melt the sugar until the sugar carmelizes.
Allow the creme brulee to sit for at least 5 minutes before serving.