My mother used to make these cookies. The dough is so good that the actual cookie yield was as low as 50%, much to her dismay.
Thoroughly cream butter and sugars.
Add eggs and vanilla.
Add dry ingredients and mix.
Add oats and nuts and mix.
Shape into squarish logs, about 1" x 1 1/2" and wrap in waxed paper.
Place in fridge or freezer and allow to chill completely.
Slice into 1/4" thicknesses.
Place on greased cookie sheet and bake in a 350 F oven for 10 minutes.