Rhubarb Custard Pie - cooking recipe

Ingredients

4 cups fresh rhubarb or 4 cups frozen rhubarb (if frozen rinse with water and drain)
1 1/4 cups sugar
1/3 cup flour
1 cup sour cream
1/2 cup flour
1/2 cup brown sugar
1/4 cup butter

Preparation

mix together rhubarb , sugar, and 1/3 cup flour and add sour cream.
put in a pie shell.
mix together 1/2 cup flour, brown sugar and butter
put crumbs over rhubarb.
put in oven and bake at 450 for 15 minutes and 350 for another 30 to 45 minutes.