Rhubarb Cake
["1/2 c. margarine", "1 1/2 c. brown sugar", "1 egg", "1 tsp. vanilla", "1 c. buttermilk", "1 tsp. baking soda", "1/2 tsp. salt", "2 1/2 c. flour", "2 c. chopped rhubarb (or more!)"]
["Blend margarine, brown sugar, egg and vanilla in a large bowl. Mix dry ingredients in a separate bowl. Put dry ingredients into margarine/sugar mixture.", "Add buttermilk.", "Mix well. Stir in rhubarb. Spread into greased and floured 9 x 13-inch pan. Sprinkle with mixture of 1/4 cup white sugar and 1 teaspoon of cinnamon. Bake at 350\u00b0 for 45 minutes or until toothpick comes out clean."]
["margarine", "brown sugar", "egg", "vanilla", "buttermilk", "baking soda", "salt", "flour", "rhubarb"]