Death by Chocolate Cheesecake

prep time: 15 minutes, plus at least 4 hours to chill cook time: about
1 hour yield: one 8-inch cake (12 servings)

crust

3½ tablespoons unsalted butter (or coconut oil if
dairy-free), plus extra for the pan
1½ ounces unsweetened chocolate, finely chopped
⅓ cup Swerve confectioners’-style sweetener or
equivalent amount of liquid or powdered sweetener
(see here)
1 teaspoon stevia glycerite
1 large egg, beaten
2 teaspoons ground cinnamon
Seeds scraped from 1 vanilla bean (about 8 inches
long), or 1 teaspoon vanilla extract
¼ teaspoon fine sea salt

filling

6 ounces unsweetened chocolate, finely chopped
1 tablespoon unsalted butter (or coconut oil if dairy-
free)