Blend oatmeal to a powder consistency.
Cream butter, sugar and brown sugar. Add in eggs and vanilla.
Combine flour, oatmeal, salt, baking soda and baking powder in a separate bowl.
Slowly combine dry ingredient mixture with the butter and egg mixture.
Add in chopped nuts and chocolate chips.
Roll cookies into balls a little smaller than golf-ball size. Place on cookie sheet approx. 2″ apart.
Bake at 375˚ for 8-10 minutes. Check at 8 minutes to see if done, cookies will continue to bake on the pan for about 2 minutes after removing from oven. Allow them to sit on pans for a couple minutes before moving to baking racks to cool.