Mix graham cracker crumbs, melted butter, and 1 tablespoon sugar in a bowl. Press the mixture into the bottom of a 9-inch springform pan.
In a large bowl, beat cream cheese with 1.5 cups sugar until smooth. Blend in sour cream, flour, and vanilla extract.
Add eggs one at a time, mixing just enough to incorporate. Pour filling into prepared crust.
Bake in preheated oven for 90 minutes. Turn off the oven, and let the cheesecake cool with the oven door ajar. Refrigerate until chilled before serving.
Notes
For best results, ensure all ingredients are at room temperature before beginning. This helps achieve a smooth, creamy texture.