----------Muffin Mix-------- 1 1/2 Cups All-Purpose Flour

3/4 Cup Packed Brown Sugar

1/2 Teaspoon Baking Soda

1/2 Teaspoon Salt

1/3 Cup Vegetable Oil

1 Egg -- Lightly Beaten

1/2 Cup Buttermilk

1 Teaspoon Vanilla Extract

1 Cup Rhubarb -- Diced

1/2 Cup Chopped Walnuts

----------Topping--------- 1/4 Cup Packed Brown Sugar

1/4 Cup Chopped Walnuts

1/2 Teaspoon Cinnamon

In a large mixing bowl, combine flour, brown sugar, baking soda and salt. Combi ne oil, egg, buttermilk, and vanilla; stir into dry ingredients just until mois tened. Fold in rhubarb and walnuts. Fill greased or paper-lined muffins cups tw o-thirds full. Combine topping ingredients; sprinkle over muffins. Bake at 3750 F for 20-25 minutes or until muffins test done. Cool 10 minutes before removin g to a wire rack. Yields 10 muffins.