Cream together in a LARGE bowl: 2 cups butter (softened), 2 cups granulated sugar, 2 cups brown sugar, and 2 tsp vanilla.
Add 4 eggs and mix.
Add to first mix (I just add all this to the top of the first mix and stir slightly together before mixing it all together, but you can mix in a separate bowl): 4 cups flour, 1 tsp salt, 2 tsp baking soda, 2 tsp baking powder, 5 cups oatmeal that has been POWDERIZED in a blender or food processor. Just pour the 5 cups in a little at a time or all at once and blend until it becomes powder like.
Chop an 8 ounce Hershey bar in food processor until it is in chunks, whatever size you like. I leave mine larger than chocolate chips.
Add the chocolate bar pieces and a 24 ounce bag of chocolate chips to the mixture.
Add 3 cups of nuts, if desired. This makes A LOT and can be difficult to mix. You may need to mix with your hands.
Place on a cookie sheet, making golf ball size balls. Bake at 350° for 8-12 minutes, depending on your oven and the size of your balls!
Enjoy warm out of the oven, or freeze in containers or Ziploc baggies. Enough to share with friends!