Almond Bars (Grandma Prins' Recipe)

Make a pie crust and roll to fit a jelly roll pan.  Then mix the following and pour it into the crust:

1 cup milk
12 egg yolks (whites to make an angel food cake?)
4 cups sugar
1 cup flour
pinch of salt
10 tsp. almond extract

Put a top crust on, sprinkle with sugar and poke lightly with the point of a knife.  Bake 15 minutes at 400ºF and then 20 minutes at 300ºF.