1 1/2 c. brown sugar (firmly packed)
2/3 c. butter
1 egg
1 c. sour milk (or buttermilk)
1 tsp. vanilla
1 tsp. baking soda
2 1/2 c. flour
1 1/2 c. diced rhubarb
1/2 c. chopped walnuts
1/2 c. sugar
1/2 tsp. cinnamon
1 tbsp. melted butter

Combine brown sugar and 2/3 cup butter. Stir in egg, sour milk (or buttermilk), and vanilla, and mix well. Sift the baking soda and flour together and stir it into the butter mix, then stir in the rhubarb and walnuts. Pour into well oiled loaf pans. Combine the 1/2 cup white sugar, cinnamon, and melted butter, and sprinkle over the top.

Bake in a preheated 325 degree oven for about 40 minutes or until done. Don't overbake. Let stand for 2 or 3 minutes, then remove from pan and cool.