Preheat oven to 160°C (320°F) and line the base and sides of a 15 cm (6 inches) springform cake mold with parchment paper.
In a large bowl, add the eggs and stir together with granular sweetener, vanilla extract and a pinch of salt. The result should be a smooth mixture.
Add to the mixture Greek yogurt and cream cheese, then stir thoroughly until all is well combined. Add the cornstarch, mixing gradually so that it doesn't form lumps.
Transfer your protein cheesecake mixture to the prepared cake mold and bake in hot oven for 40 to 50 minutes, mine took 45 minutes.
Once the cheesecake is baked, let cool completely to room temperature and then refrigerate for at least 8 hours before slicing.