The soft oatmeal cookie recipe I use is from Jenny Can Cook--I think that is the name of the website that Len discovered and shared. It calls for oil, and I use canola. My only changes are to add a Tbs. each of milk powder and flax meal per recipe and to use white whole wheat flour. I do not recall if her recipe uses walnuts, but I add 1/2 cup. For soft cookies, I use quick oats. For chewier ones, I would use old fashioned, but we like them soft. I often make these cookies to take on trips, but sometimes we just like having them at home with tea.