I Need A Recipe For: Basque Cake (Gateau Basque)

Ingredients:
1/2 lb.   butter
1 cup   white sugar
2    egg yolks
1    whole egg
2 cup   plus 1 tablespoon cake flour
1 pinch   salt
1    lemon, zest of (grated peel)
1 cup   milk
1/3 cup   sugar
25g flour (plain or cake)
1 pinch   salt
2    egg yolks, lightly beaten
2 tsp   vanilla, to taste.

Cake flour here means flour with baking soda/powder  
premixed.
Cream sugar into soft (but not melted) butter until smooth.  
Add the 2 egg yolks, whole egg, and lemon peel. Mix well.  
Add cake flour gradually and stir until well blended.  
Cover mixing bowl and keep in refrigerator for one hour.  
  
Mix sugar, flour and salt in a bowl. Heat milk in heavy-bottomed saucepan until very hot but not boiling. Whisk hot milk into bowl of dry ingredients and beat until blended.  
return mixture to pan and whisk over low heat until thickened (like  pudding) - 4 to 5 minutes.  Add egg yolks and cook 2 or 3 minutes more, constantly stirring.  Remove from heat and cool, stirring occasionally. Stir in vanilla, butter and flour a regular-sized round cake pan.
After the dough is hard, divide not quite equally into two parts.  Press larger part into bottom of cake pan, covering bottom and partway up the sides to make a trough.  Spoon creme patissiere into middle of cake. Working quickly, roll out (or try with your fingers) the rest of the  dough into a circle. Lay over the filling and seal at the sides with the bottom half. Cook at 180 c (350 f) for about 40 minutes, until golden  
brown  on top. Serve in wedges.

I have found two recipes which you might like to look at. The first is an authentic recipe with instructions from a French chef - looks very clear and straightforward.

The other recipe is from a website of enthusiasts called french food freaks - this is very detailed, so it might be helpful to look at both of them. The quantities etc seem similar.