Lemon Sponge Pie - cooking recipe

Ingredients

1 c. sugar
3 Tbsp. flour
1 Tbsp. butter
1 c. milk
2 egg yolks (reserve whites)
rind and juice of 1 lemon or 4 Tbsp. bottled lemon juice

Preparation

Mix and add beaten egg whites; pour into unbaked crust and bake at 400\u00b0 for 10 minutes.
Continue baking at 350\u00b0 for about 30 minutes.