Instructions

  1. In a large bowl, combine the first five ingredients.
  2. Combine egg, buttermilk, oil and vanilla; stir into dry ingredients just until moistened.
  3. Fold in rhubarb, fill greased or paper lined muffin cups half full.
  4. Combine topping ingredients; sprinkle over each muffin.
  5. Bake at 375 degrees for 16-18 minutes or until muffins test done.