1 c/. sugar
2 tbsp. flour
1 egg
1/2 tsp. vanilla
2 c. rhubarb, cut up
1 unbaked pie shell

Combine flour and sugar; stir in egg. Add vanilla and rhubarb. Place in unbaked pie shell. Sprinkle with topping (recipe follows). Bake at 450 degrees for 15 minutes; reduce oven temperature to 350 degrees and bake 30 minutes more.

TOPPING:

1/3 c. butter
1/2 c. brown sugar
3/4 c. flour

Cream butter; add brown sugar and flour. Blend together until crumb-like.