Rhubarb Cake - cooking recipe

Ingredients

1/2 c. butter
1 1/2 c. brown sugar, packed
1 egg
1 tsp. vanilla
1 c. buttermilk
1 tsp. soda
2 c. flour
1 1/2 c. rhubarb, coarsely chopped

Preparation

Beat butter, sugar, egg and vanilla until creamy.
Stir soda into buttermilk; add to sugar mixture alternating with flour. Stir in rhubarb.
Spread in greased and floured 9 x 13-inch pan. In small bowl, combine 1/2 cup sugar, 1 teaspoon cinnamon and 1 tablespoon melted butter.
Sprinkle over batter.
Bake at 350\u00b0 for 40 minutes.