About 4 c. cut-up rhubarb
1 c. sugar (slightly more, if you don't like it tart)
3 to 4 tbsp. flour
1 1/4 to 1 1/2 c. sour cream

Mix together. Put in unbaked shell. Can use top crust or 1 crust only. Bake 15 minutes at 450 degrees, then 45 minutes at 350 degrees.