Preheat oven to 350°F (175°C). Prepare your springform pan by greasing it or lining it with parchment paper.
Prepare the crust: If using pork rinds, crush them finely in a food processor. If using ground beef, cook it and press it into the pan. Combine your crust base with melted butter (and bacon if using). Press firmly into the base of the pan.
Bake the crust: Place the pan in the oven and bake for 10-15 minutes until golden and crispy.
Prepare the filling: In a large bowl, mix the cream cheese, heavy cream, eggs, butter, and optional vanilla extract using a hand mixer or stand mixer. Add sweetener (if desired) and a pinch of salt. Mix until smooth and creamy.
Fill the crust: Pour the filling mixture over the cooled crust, smoothing the top with a spatula.
Bake the cheesecake: Place the cheesecake in the oven and bake for 30-40 minutes, or until the filling is set and a knife comes out clean when inserted.
Cool and chill: Let the cheesecake cool at room temperature, then refrigerate for at least 4 hours or overnight to allow it to fully set.