mom's rhubarb cake

Ingredients For mom's rhubarb cake

• 1 1/2 c

  brown sugar, firmly packed
• 1/2 c

  shortening/butter
• 1

  egg
• 1 c

  buttermilk (1/4 c. vinegar to 3/4 c. milk)
• 2 c

  fresh rhubarb~cut into small pieces
• 2 c

  flour
• 1 tsp

  salt
• 1 tsp

  baking soda
• 1 tsp

  vanilla
• TOP:
• 1/2 c

  sugar
• 1/2 tsp

  or to taste, cinnamon