01 -
Turn your oven to 350°F (180°C) and place the rack in the middle.
02 -
Combine the graham crumbs, melted butter, and sugar in a bowl. Press firmly into a 9-inch deep pie dish, covering the bottom and sides.
03 -
In a large bowl, whisk the sweetened condensed milk, egg yolks, and zest together. Gradually pour in the lemon juice, stirring until it thickens.
04 -
Put the mixture into your prepared crust and bake for 25–30 minutes. The edges should settle, but the center can wobble a bit.
05 -
Let the pie sit on a wire rack to cool. Cover it and chill for at least 3 hours or, even better, overnight for a firmer result.