Reduce the oven temperature to 320F (160C).
In a large bowl cream the cream cheese until smooth.
In a separate bowl, mix the sugar and cornstarch then mix it into the cream cheese.
Mix in the pistachio praline (or cream). Use a rubber spatula to scrape the bottom and sides of the bowl.
Mix in the heavy cream.
Add the eggs, one at a time, waiting for the egg to fully incorporate before adding the next. Scrape the sides and bottom of the bowl.
Mix in the vanilla extract.
Pour the filling over the crust and bang the pan over your kitcahn counter to release any air.
Cover the top of the cake with aluminum foil (should not touch the filling), then make 2-3 holes in it.
Place the pan in a 9x13-inch brownie pan.
Pour hot water into the 9x13 pan until it reaches half the height of the cheesecake pan.
Bake for 60-70 minutes, until the sides of the cake are set, but the center jiggles.
Turn the oven off, close the door and allow the cake to cool in the oven for 2-3 (preferably 5) hours.
Remove from the oven, and refrigerate for a few hour until it chills completely.