In a medium bowl combine graham cracker crumbs, sugar and butter. Mix with a fork.

Press mixture into a 9 in round pie pan. Bake at 350 for 7 min.

While pie crust is baking, whisk sweetened condensed milk, lime juice and egg yolks. Pour mixture into the pie crust. Bake for 10-15 min, until the center is set but still a little jiggly.

Let the pie cool to room temp and refrigerate for at least 3 hrs (overnight is better)