1. Prepare the Crust: 

– In a mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Mix until the texture resembles wet sand.

– Press the mixture firmly into the bottom of a 9-inch springform pan. Use the back of a spoon to even out the crust.

– Chill the crust in the refrigerator while preparing the filling.

2. Make the Filling:  

– In a large bowl, beat the softened cream cheese until smooth and creamy.

– Gradually add the sweetened condensed milk, mixing thoroughly.

– Stir in the key lime juice, zest, and vanilla extract.

– Fold in the whipped heavy cream gently to maintain its fluffy texture.

3. Assemble the Cheesecake:  

– Pour the filling onto the prepared crust, spreading it evenly with a spatula.

– Smooth the top for a professional finish.

4. Chill the Cheesecake:  

– Cover the pan with plastic wrap and refrigerate for at least 4 hours, or overnight for the best results.

5. Serve and Garnish: 

– Carefully remove the cheesecake from the pan. Decorate with whipped cream, lime slices, or additional graham cracker crumbs.

– Slice and serve chilled for the ultimate creamy, tangy dessert experience.