3/4 c. brown sugar
1/2 c. oil
1 egg
1/2 c. buttermilk or sour milk
1 tsp. vanilla
1 1/2 c. flour
1/2 tsp. baking soda
1/2 tsp. salt
1/2 c. chopped nuts
1 c. chopped rhubarb

TOPPING:

1/4 c. brown sugar
1/4 tsp. cinnamon
1/4 c. chopped nuts

Sprinkle the mixed topping over the muffins before baking. Bake at 400 degrees for 20 to 25 minutes.