For the crust
4 tablespoons butter, melted and cooled, plus more for pan
1-1/2 cup graham cracker crumbs
1/4 cup sugar
for the filling
2 large egg yolks
1 can (14 ounces) sweetened condensed milk
1/2 cup fresh lemon juice (3 lemons)
preheat oven to 350f / 180c degrees.
brush a square baking dish with melted butter.
crush graham crackers
then add in sugar and butter and blend to mix.
press mixture into bottom of prepared pan.
bake until lightly browned, 8 to 12 minutes.
cool crust, 30 minutes.
to make the filling
*in a large bowl, whisk together egg yolks and condensed milk.
*add lemon juice; whisk until smooth.
*pour filling into cooled crust; carefully spread to edges.
*bake until set, about 15 minutes.
*cool in pan on rack.
*chill at least 1 hour before serving.
serve with whipped cream.