Preheat your oven to 325 degrees.
In a large bowl, beat together the sugar, goat cheese and cream cheese using an electric hand mixer until very smooth and well combined, stopping to scrape down the sides as necessary.
Add the Greek yogurt, eggs, vanilla and cinnamon and beat until JUST combined. You don't want to beat it too much or the cheesecake will have too much air in it and sink when baking.
Remove your graham cracker crust from the freezer and wrap the bottom first with a slow cooker liner and then very tightly with 2 layers of wide, heavy duty aluminum foil**. Place the pan into a large roasting pan.
Pour the cheesecake onto the crust and smooth out evenly. Transfer to the middle rack of your oven and fill the roasting pan with water so that it comes half way up the springform pan. *
Bake until the outside is set, and a small circle in the center is jiggly, about 55 mins to 1 hour. Turn the oven off and crack the door slightly, letting the cheesecake sit in the oven for 15 minutes. Then, transfer to the counter to cool completely.
Once cooled, cover and refrigerate for at least 8 hours, but best if overnight.