In a large mixing bowl, using a stand mixer fitted with the paddle attachment (or a hand mixer), beat the cream cheese at medium speed until smooth, about 2 minutes.
Add the granulated sugar and mix on medium speed until fully incorporated, scraping down the sides of the bowl as needed.
Reduce the mixer to low speed and add the sour cream and vanilla extract, mixing until just combined.
With the mixer still on low speed, add the eggs one at a time, mixing each until just incorporated. (Avoid overmixing.)
Pour the filling into the prepared crust, smoothing the top with a spatula.
Place the springform pan inside a larger roasting pan. Carefully pour hot water into the roasting pan until it reaches about halfway up the sides of the cheesecake pan.
Bake for 60–70 minutes, or until the top is lightly golden and the center is set but slightly jiggly.
Remove the cheesecake from the oven and allow it to cool in the pan on a wire rack to room temperature.
In a small bowl, whisk together the sour cream and confectioners' sugar. Spread evenly over the cooled cheesecake.
Cover and refrigerate the cheesecake for at least 4 hours, preferably overnight, before slicing and serving.
When ready to serve, garnish with your favorite toppings.