Preheat your oven to 350°F.

In a medium bowl, mix together the graham cracker crumbs, melted butter, and sugar until well combined. Press the mixture into a 9-inch pie dish and bake for 10 minutes.

In another bowl, whisk together the egg yolks and condensed milk until smooth. Add in the key lime juice and mix until well blended.

Pour the mixture into the prepared crust and bake for 15 minutes or until set.

Let the pie cool to room temperature, then refrigerate for at least 1 hour.

Serve chilled, with whipped cream, strawberries and lime slices for garnish if desired.