1 egg
1 cup sugar
1 tablespoon flour
1 teaspoon vanilla
3 cups diced rhubarb
3/4 cup flour
1/3 cup butter
1/2 cup brown sugar
1 9 inch pie shell — unbaked
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Combine egg, white sugar, 1 tablespoon flour, and vanilla and mix well. Fold in rhubarb. Spoon into unbaked pie shell. Combine 3/4 cup flour, margarine, and brown sugar. Crumble with fingers. Spread over rhubarb mixture. Bake at 400 degrees for 10 minutes. Reduce temperature to 350 and bake 40 minutes longer.