Rhubarb Walnut Muffins

Along with the Pumkin Carrot bread, I made some Rhubarb Walnut Muffins for our recent flight as snacks. I thought they turned out pretty well. Again, not the sweetest muffin, but I did not use the streusel topping to avoid extra crumbs while traveling. Also, the muffins were a little dry and therefore crumbly. I would like to try these again with a second attempt.