In a large bowl, combine flour, baking soda, cinnamon and salt.
In a stand mixer, combine by beating: peanut butter, butter, sugar, brown sugar, vanilla, brewer's yeast, flax and water until creamy. Then mix in the eggs.
Gradually beat in flour mixture. Stir in nuts and chocolate chips. Slowly add oats, mixing as you go.
Place balls of dough onto greased baking sheets. Press down on each ball lightly with a fork.
Bake 12 minutes.
Notes
Recipe credit: Kathleen Majox
Recipe by Dallas Duo Bakes at http://dallasduobakes.com/2014/11/milk-makin-cookies.html