First you will have to soak your cashews over night or do a quick soak method by bringing them to a boil in a small sauce pot with just enough water to cover then let them sit in the hot water for 30 minutes, drain & use in your recipe right away.
Prepare the gingersnap cookie recipe according to the instructions on that recipe post. Then in a food processor crush up about 4-5 of the baked & cooled large sized (2ounce cookies) to fine crumbs (about 1½ cups) then add the 2 tablespoons of melted vegan butter & process until the mixture resembles wet sand
Press this firmly into the bottom of a 7" springform pan that has been lined with an acetate cake strip (not essential but the acetate helps for a clean looking cheesecake & for easier removal from the pan)
Refrigerate or freeze while you prepare the pumpkin cheesecake batter
First make the custard portion by combing the cornstarch, agar, sugar & spices together in a medium sauce pot, whisk to combine well.
Next add the plant milk, pumpkin & vegan butter & bring to a boil over medium to high heat while whisking constantly
Once it boils transfer it to a high speed blender or a food processor along with the drained cashews, vanilla extract, lactic acid & vegan cream cheese, puree smooth
Pour over the prepared crust and refrigerate overnight to set *do not freeze
Once set unmold the cheesecake onto your serving platter & add optional buttercream rosettes & additional ginger cookie garnish