Prepare the Crust
Preheat oven to 325°F (160°C).
Mix graham cracker crumbs, melted butter, and sugar until combined.
Press firmly into the bottom of a 9-inch springform pan.
Bake for 8–10 minutes, then let cool.
Make the Raspberry Sauce
In a saucepan, cook raspberries, sugar, and lemon juice over medium heat until softened.
Strain to remove seeds and allow to cool completely.
Prepare the Cheesecake Filling
Beat softened cream cheese until smooth and creamy.
Add sugar and mix well.
Add eggs one at a time, mixing gently.
Stir in sour cream and vanilla extract until smooth.
Assemble the Cheesecake
Pour filling over the cooled crust.
Spoon raspberry sauce on top and swirl gently using a knife.
Bake
Bake for 50–60 minutes. The center should slightly jiggle.
Turn off oven, crack the door open, and allow cheesecake to cool gradually.
Chill
Refrigerate for at least 4 hours or overnight before slicing.