1 1/2 c. brown sugar
1 c. buttermilk
1 1/2 c. rhubarb, cut up
2 1/2 c. flour
2 tsp. vanilla
1/2 c. oil
1 egg
1/2 c. nuts
1 tsp. baking soda
1 tsp. baking powder
1/2 tsp. salt

Combine ingredients. Drop in greased or paper-lined muffin tins. Combine 1/3 cup sugar and 1/2 teaspoon cinnamon. Sprinkle on muffin tops. Bake at 350 degrees for 20 minutes.