Ingredients

Cake:

2 cups flour (AP is fine)

1.5 cups sugar

2+ cups diced rhubarb (2 to 3 stalks)

0.5 cup margarine

1 large egg

1 tsp vanilla

1 cup buttermilk

1 tsp baking soda

Topping:

0.5 to 1 cup of brown sugar

2 to 3 tsp. cinnamon

Preparation

Preheat oven to 425 F. Dissolve baking soda in the buttermilk. Dust rhubarb with some of the flour. Mix all ingredients (adding rhubarb last) well. Pour into a greased 9 x 13 inch pan. For topping, mix brown sugar and cinnamon, then crumble on top of the poured batter. Bake at 325 F for one hour.