Add the half and half to a small sauce pan and heat over low heat until steaming, then add in the teabags. Allow them to steep for 10 minutes, then remove from the heat, remove the teabags and let cool.
1/3 cup (80 ml) half and half, 2 chai teabags
Preheat the oven to 350° F (175° C) if not still preheated from the crust.
In a large bowl, mix the cream cheese, brown sugar and cornstarch together with a hand mixer on medium speed until smooth and free of lumps, about 2 minutes.
24 oz (680 g) cream cheese, softened at room temperature, 1 cup (220 g) light brown sugar, 2 tbsp (16 g) cornstarch
Add in the melted brown butter, sour cream, vanilla, chai tea mixture and spices and mix on medium-low speed just until combined.
1/4 cup (60 ml) melted brown butter from above, 1/4 cup (62 g) sour cream, at room temperature, 1 tbsp vanilla extract, 1 tbsp ground cinnamon, 1 1/2 tsp ground ginger, 1/2 tsp ground allspice, 1/2 tsp ground nutmeg, 1 tsp ground cardamom, 1/4 tsp ground cloves
Add in the eggs and mix on medium-low speed just until combined.
3 eggs, at room temperature
Pour the cheesecake batter into the prepared pan with the crust. Bake for 42-45 minutes, just until the center only has a slight jiggle. Then turn the oven off and prop the oven door open for 10 minutes using a wooden utensil.
Remove the cheesecake from the oven and allow it to cool completely in the pan on a wire rack. Then transfer it to the fridge and allow it to chill in the fridge for 6 hours, or until completely cold. (I usually bake it the night before and allow it to chill overnight.)