01 -
Preheat the oven to 175°C to prepare for baking.
02 -
In a large bowl, mix sweetened condensed milk, key lime juice, sour cream, and grated lime zest until fully blended.
03 -
Pour the filling into the prepared graham cracker crust, spreading evenly and placing the pie on a baking sheet to catch spills.
04 -
Bake for 5 to 8 minutes, until tiny pinhole bubbles appear on the surface; the filling should be set but not browned.
05 -
Cool the pie on a wire rack, then chill in the refrigerator for approximately 1 hour until thoroughly set.
06 -
Before serving, adorn with lime slices and whipped cream as desired. Serve chilled for optimal flavor.