Creating the Key Lime Cheesecake is straightforward if you follow these steps:

1. Preheat Oven: Set your oven to 325°F (160°C) to preheat while you prepare the crust.
2. Make the Crust: In a mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Stir until well mixed and crumbly.
3. Form the Crust: Press the mixture firmly into the bottom of a 9-inch springform pan. Bake for 10 minutes, then remove from oven and let cool slightly.
4. Prepare the Filling: In a large mixing bowl, beat the softened cream cheese with granulated sugar until smooth and creamy.
5. Mix Ingredients: Add sour cream, key lime juice, lime zest, eggs, and vanilla extract. Beat on low speed until just combined; avoid overmixing.
6. Pour Filling: Carefully pour the cream cheese mixture over the cooled crust, spreading it evenly.
7. Bake the Cheesecake: Place in the oven and bake for 45 minutes, or until the center is set but slightly jiggly.
8. Cool: Remove from the oven and allow it to cool at room temperature for about 30 minutes, then refrigerate for at least 4 hours or overnight.
9. Remove from Pan: Gently run a knife around the edges of the cheesecake before releasing the springform pan.
10. Serve: Top with whipped cream, lime slices, and additional lime zest as desired before slicing.

These steps will guide you in creating this scrumptious cheesecake effortlessly!