Beat with:

1/4 c. milk
2 egg yolks
2 tbsp. flour
2 tbsp. butter
1 c. milk
3/4 c. sugar
Whites of eggs, beaten

1 c. or more rhubarb for each pie shell
2 pie shells

Line pie shells with rhubarb and pour liquid over. Bake at 450 degrees for 10 minutes, then at 350 degrees until done.