Cream together butter and sugars in a large mixing bowl; add eggs and vanilla.
In a blender or Cuisinart, blenderize oatmeal and Hershey bar.
Combine flour, oatmeal, Hershey bar, salt, baking soda, and baking powder. Mix with butter and sugar mixture.
Stir in chocolate chips and nuts.
Drop by spoonfuls onto a cookie sheet and bake at 350 degrees F for 12 minutes.
