Lunar Rhubarb Cake

Cream together:
½ cup butter
1 ½ cup sugar

Beat in:
1 egg
1 tsp vanilla

Sift together:
2 cups flour
1 tsp soda
½ tsp salt

Add sifted ingredients alternately with:
1 cup milk or cream & 1 Tbsp vinegar

Mix cake batter & add:

2 cups chopped rhubarb
Tossed with 1 tbsp flour.

Pour into greased 9x13 pan. Sprinkle with topping.

Topping:
¼ cup butter
2 tsp cinnamon

1 cup brown sugar

Bake 45 min @ 350.