01 - Preheat oven to 325°F. Lightly grease a 9-inch springform pan and line the bottom with parchment paper.
02 - Combine graham cracker crumbs, melted butter, sugar, and salt until evenly mixed. Press firmly into the bottom of the prepared pan and bake for 10 minutes. Let cool slightly.
03 - In a large bowl, beat cream cheese and sugar until smooth and creamy.
04 - Add eggs one at a time, mixing well after each addition.
05 - Stir in sour cream, lime juice, lime zest, vanilla extract, and flour until fully combined and smooth, scraping down the sides as needed.
06 - Pour the filling over the cooled crust and smooth the surface evenly.
07 - Place springform pan on a baking tray and bake for 45 minutes, or until the center is just set but still slightly jiggly.
08 - Turn off the oven, crack the door open, and let the cheesecake cool inside for 1 hour.
09 - Remove from oven, cool completely at room temperature, then refrigerate at least 4 hours or preferably overnight.
10 - Before serving, garnish with whipped cream and additional lime zest or slices if desired.