1 1/2 c. brown sugar
2/3 c. vegetable oil
1 egg
1 c. buttermilk or sour milk (add 1 tbsp. lemon juice to reg. milk)
1 tsp. vanilla
1 tsp. salt
1 tsp. baking soda
2 1/2 c. flour
1 1/2 c. rhubarb, diced
1/2 c. walnuts, chopped

Combine brown sugar and vegetable oil. Add egg, sour milk and vanilla. Beat well. Stir together dry ingredients, then stir into sugar mixture. Fold in rhubarb and nuts. Pour into greased and floured pan, filling 2/3 full.

TOPPING:

1/2 c. sugar
1 tbsp. butter
Cinnamon, if desired

Combine and sprinkle over top. Bake at 325 degrees about 40 minutes. Remove and cool.