Pre-heat your oven to 300 degrees Fahrenheit or 148 Celsius. Seal the bottom and sides of the grahamcracker crust-prepared springfoam pan, with aluminum foil. Place the foiled pan in the center of a high-sided baking sheet, so that you can later add water.
In a bowl, mix the cream cheese and tofu together.
Add the sugar and optional vanilla extract. Mix.
Add 6 eggs, one at a time until completely combined.
Scrape the paddle or mixing attachment.
Mix on high speed for 1-3 minutes.
Fold in the pure Matcha powder until completely combined.
Pour on top of the prepared graham cracker crust.
Place the sheet pan with the foiled and filled springform pan, into your pre-heated oven. I recommend placing it at a near-bottom rack.
Pour about 4 cups of water into the pan, so that it reaches 1/3-1/2 up the baking cheesecake. This amount depends on the size of the baking sheet you are using. It does not have to be exact.
Check the cheesecake at the center at about one hour. It took me 1 hour and 20 minutes to bake this. It should not brown and it may start to crack. You can check the center for doneness as it should be soft but firm and not wet. The exact time will depend on your pan and your oven. It will not need to bake for more than an hour and a half.
After the cheesecake has cooled to room temperature, (you can cover it or not) keep it inside the springform pan and place in the refrigerator over night.
Easily remove the cheesecake from the pan and serve. Keep in the refrigerator for up to four days, or freeze for up to three weeks to enjoy at on a later date.