Start by browning the butter in a saucepan until it smells nutty and golden. Mix it with cookie crumbs and brown sugar. Press the mixture evenly into your springform pan to form the crust.
Beat the cream cheese until smooth, then add sour cream, sugar, and vanilla. Slowly mix in the eggs one at a time, ensuring you don’t overbeat. Fold in the flour and the remaining browned butter for extra depth.
Bake the cheesecake in a water bath at a low temperature to prevent cracks. Once done, let it cool gradually on the counter, then refrigerate for at least 6 hours, preferably overnight. This gives the cheesecake a creamy, set texture.