Mix together with a fork, just until combined, do not over mix:
1 cup sugar
2 TBS flour
1 tsp. vanilla
1 egg
Stir in:
2 cups finely chopped rhubarb
Pour this mixture into 1 unbaked pie crust
Crumb topping:
¾ cup flour
½ cup brown sugar
1/3 cup butter
Mix until crumbly and sprinkle on top of rhubarb/egg mixture.
Bake at 350F for 50-60 minutes, until knife inserted into center comes out clean
