Cranberry House Rhubarb Coffee Cake

1/2 c melted butter
1 1/2 c sugar
1 egg
1 t vanilla
2 c flour
1 c buttermilk
1 t baking soda
1/2 t salt
2 c chopped rhubarb

Mix together and put in a greased 9 x 13 pan

1/4 c melted butter
2 t Cinnamon
1 c brown sugar
chopped nuts

mix together and pour on top
Bake at 350 for 45 min

I recently found some Rhubarb at the grocery store. Yea! So I thought that I would post one of my favorite rhubarb recipes. Mom got this from a bed and breakfast that they stayed at.