Prepare the Crust:
Preheat your oven to 325°F (160°C).
In a mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Mix until well combined.
Press the mixture firmly into the bottom of a 9-inch springform pan.
Bake for 8-10 minutes until set. Remove from the oven and let cool.
Make the Strawberry Swirl:
In a small saucepan, combine sliced strawberries, sugar, and lemon juice.
Cook over medium heat for about 5-7 minutes until the strawberries soften and release their juices.
Mash the strawberries slightly with a fork or potato masher, then let cool.
Prepare the Cheesecake Filling:
In a large bowl, beat the cream cheese until smooth.
Add sugar and vanilla, mixing until well combined.
Add eggs one at a time, mixing on low speed until just combined.
Stir in sour cream until smooth.
Assemble the Cheesecake:
Pour half of the cheesecake filling into the cooled crust.
Drop spoonfuls of the strawberry mixture over the filling, then swirl with a knife.
Add the remaining cheesecake filling and top with the remaining strawberry mixture, swirling again.
Bake the Cheesecake:
Bake in the preheated oven for 55-65 minutes, or until the center is set but still slightly jiggly.
Turn off the oven, crack the door, and let the cheesecake cool in the oven for 1 hour to prevent cracks.
Chill:
Once cooled, refrigerate for at least 4 hours or overnight before serving.