Preheat oven to 350°F
Cream butter and sugars together
Add eggs and vanilla
Mix in flour, baking soda, and salt
Stir in oats, flaxseed, and brewer's yeast
Fold in optional add-ins
Scoop onto baking sheet and flatten slightly
Bake 10-12 minutes until edges are lightly golden
Freezer Instructions
Scoop cookie dough onto tray
Freeze until solid
Transfer to freezer bag
Bake straight from frozen: add 1-2 extra minutes