1 (14 ounce) can sweetened condensed milk
2 egg yolks
3 lemons, juiced
1 (9 inch) prepared graham cracker crust
Beat condensed milk and egg yolks in a bowl until smooth. Add lemon juice and stir until the mixture begins to thicken; pour into prepared pie crust. Refrigerate pie until set in the middle, 6 hours to overnight.