Gather all your ingredients and let the cream cheese and eggs come to room temperature to ensure a smooth batter without lumps.
In a large mixing bowl, beat the room temperature cream cheese with a hand mixer until smooth. Gradually add in the granulated sugar and lemon zest, mixing until well combined.
Add the eggs one at a time, mixing on low speed until just incorporated. Be careful not to overmix to avoid air bubbles and cracks.
Gently fold in the heavy cream and vanilla extract until the mixture is creamy and smooth.
Preheat your oven to 325°F (160°C). Place your jars in a baking dish. Pour the cheesecake batter into each jar, filling them about two-thirds full to allow for rising during baking.
Carefully fill the baking dish with hot water until it reaches halfway up the sides of the jars. Bake for 25-30 minutes, or until the centers are just set.
Remove the jars from the water bath and allow them to cool to room temperature. Then refrigerate for at least 4 hours or overnight for best results.
Before serving, top each cheesecake jar with a handful of fresh berries for a burst of flavor and color.