Mix 16 ounces regular cream cheese with 2 cups sour cream in a large bowl until smooth and no lumps remain.
Add 1 cup sugar and mix until well integrated.
Add 3 eggs and continue mixing until everything is well combined and creamy. You don’t need to beat because we don’t want to incorporate air into the mixture, but make sure no egg parts remain, especially egg whites which tend to take longer to disintegrate.
Scrape the sides of the bowl regularly with a spatula to fully integrate the mixture.
Add 1 tablespoon vanilla extract and mix well. Pour the batter into the prepared pan.
Bake cheesecake for 30 minutes in the preheated oven. Turn off the oven and leave the cheesecake inside, without opening the oven door, for 1 hour.
Remove from the oven and cool completely to room temperature on a wire rack.
Cover it in plastic wrap without removing it from the pan and refrigerate it for at least 8 hours. I recommend a minimum of 1 day. (At this point, it can also be frozen, always well wrapped).
Run a smooth-bladed knife around the edges and carefully remove the side ring from the pan. If you used aluminum paper, lift the sides and place your open palm beneath the paper and the pan. Lift the whole cheesecake (it’s cold, so it’s firm), carefully unwrap the paper and remove it completely, and place the cheesecake on the serving plate.
Serve with berry jam, sauce, topping, or fresh berries.