Rhubarb Pie - cooking recipe

Ingredients

2 c. rhubarb
1 1/2 c. sugar
4 Tbsp. flour
4 Tbsp. butter
2 eggs, separated
unbaked pie crust

Preparation

Fill unbaked crust with rhubarb.
Mix flour, sugar and butter. Add beaten egg yolks to mixture.
Spread over rhubarb then bake at 350\u00b0 until rhubarb is soft.
Beat egg whites, add 4 tablespoons sugar; spread on top of pie.
Put back in oven until brown.