01 - Set oven temperature to 430°F (220°C). Line a 9-inch (23 cm) springform pan with parchment paper, ensuring the paper overhangs for easy release.
02 - In a large bowl, combine cream cheese and granulated sugar. Beat together with a stand mixer or hand mixer until completely smooth and creamy.
03 - Add eggs one at a time, mixing thoroughly after each addition until fully incorporated.
04 - Pour in heavy cream and optional vanilla extract. Mix until the batter is homogenous and silky.
05 - Sift all-purpose flour and fine sea salt into the bowl. Mix on low speed until just combined. Avoid overmixing.
06 - Transfer the batter into the prepared pan. Gently tap the pan on the countertop to eliminate any large air bubbles.
07 - Bake in the center of the preheated oven for 45 to 50 minutes, until the top is deeply browned but the center remains slightly wobbly.
08 - Remove the cake from the oven and cool to room temperature. Expect some deflation as it cools.
09 - Refrigerate for a minimum of 4 hours or overnight to set the texture before slicing and serving.