1. Preheat the oven – 375 degrees F (190 degrees C).
2. Stir in the soft butter and sugar together.
3. Add eggs, flax seeds and vanilla extract to the butter mixture. Mix well.
4. Slowly add the dry ingredients oats, flour, baking soda, and brewer’s yeast to the wet mixture, one by one. Mixing after each addition until everything is well incorporated.