Lemon Sponge Pie

Directions

1. 1
   Cream butter and sugar until fluffy.
2. 2
   Add egg yolks, flour, milk, lemon peel and lemon juice and mix together.
3. 3
   Beat egg whites until stiff (but not dry).
4. 4
   Carefully fold egg whites into mixture.
5. 5
   Pour into unbaked pie shell.
6. 6
   Bake for 15 minutes at 375F/190C.
7. 7
   Lower oven to 300F/150C and bake for additional 45 minutes.