1 1/4 c. brown sugar
1/2 c. oil
1 egg
2 tsp. vanilla
1 c. buttermilk
1 1/2 c. diced rhubarb
2 1/2 c. flour
1 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt

Combine first 6 ingredients into a bowl. In a separate bowl combine remaining ingredients. Stir first mixture into second mixture until well blended. Spoon batter into muffin cups; scatter topping over muffins (see below). Bake at 400 degrees for 20 minutes.

1 tbsp. melted butter
1/3 c. sugar
1 tsp. cinnamon

Makes 18 muffins.