This recipe my mother in law gave to me many years ago. I have to say that it is our favorite pie recipe!
4 C. rhubarb cut in 1" pieces
2 C. sugar
3 T. flour
4 T. butter
1/8 tsp cinnamon
1/4 tsp salt
Pre-heat oven to 450*
Combine all ingredients except rhubarb, mixture will be creamy
Stir in thubarb. Put in single unbaked pie crust.
Bake at 450* for 15 minutes. Reduce to 375* and bake for 30 more minutes until center is set and pie is puffed up.
Let cool before cutting.