Add the cream cheese and granulated sugar to the bowl of a stand mixer fitted with the paddle attachment. Cream them together on medium speed for 2 minutes.
Next, add the sour cream and vanilla extract and mix to combine.
Add the eggs, one at a time, mixing fully between each one.
Once all of the eggs have been incorporated, scrape down the sides of the bowl and fold the batter a few times to make sure everything is evenly incorporated.
Pour the mixture over the crust.
Then, add the blueberry jam in spoonfuls and swirl it into the cheesecake layer.
Sprinkle over the fresh blueberries.Bake the cheesecake for 45-50 minutes, or until the edges are light brown and the center is fully set.
Allow the cheesecake to cool at room temperature for one hour and then transfer it to the fridge to chill for at least two hours before slicing.