Ingredients:

  • 1.5 cups (150g) graham cracker crumbs
  • 1/3 cup (65g) granulated sugar
  • 6 tbsp (85g) unsalted butter, melted
  • 2 cans (14 oz / 397g each) sweetened condensed milk
  • 1/2 cup (120ml) fresh key lime juice
  • 3 large egg yolks
  • 1 tbsp (6g) lime zest
  • 2 tbsp (30g) sour cream
  • 1 cup (240ml) heavy whipping cream
  • 2 tbsp (15g) powdered sugar
  • 1 tsp (5ml) vanilla extract

Instructions:

  1. Combine graham cracker crumbs, sugar, and melted butter in a bowl until the mixture resembles wet sand.
  2. Press the mixture firmly into the bottom and up the sides of a 9-inch pie plate.
  3. Bake the crust at 350°F (175°C) for 8–10 minutes until fragrant and lightly golden, then set aside to cool completely.
  4. In a large bowl, whisk the egg yolks and sweetened condensed milk together until smooth and pale.
  5. Gradually stir in the key lime juice, lime zest, and sour cream, whisking continuously until the mixture thickens slightly.
  6. Pour the filling into the cooled crust and bake at 350°F (175°C) for 12–15 minutes until the edges are set but the center has a slight wobble.
  7. Remove from oven, cool to room temperature, and refrigerate for at least 4 hours to fully set.
  8. Beat heavy whipping cream, powdered sugar, and vanilla extract until stiff peaks form, then spread over the chilled pie before serving.