3/4 c. butter
1 egg
1 1/2 c. sugar
1 1/2 tsp. baking soda
2 c. plus 2 tbsp. flour
1 c. sour cream or yogurt
1 tsp. vanilla
4 c. diced rhubarb

Cream the first 3 ingredients, gradually add the next 5 ingredients.

TOPPING:

1/2 c. sugar
1 tsp. cinnamon
1 tbsp. butter

Mix the topping ingredients and crumble on top of batter in greased 9 x 13 inch pan. Bake for 45 minutes at 350 degrees.