Susan's Chocolate Chip Cookies

This is my favorite chocolate chip cookie recipe, it makes a lot, and they are yummy!
2 cups butter, softened
2 cups sugar
2 cups brown sugar
4 eggs
3/4 tsp. baking powder, baking soda, salt, and vanilla
3 cups oats
5 cups flour
2 cups coconut (opt.)

Cream together 1st four ingredients then add remaining. Add milk to moisten. Bake 350 degrees for 8-10 minutes. I like to under cook them a little so they stay soft.
*My dad loves oatmeal raisin cookies so I add one more cup oatmeal and eliminate one cup flour, add 1 1/2 tsp. cinnamon and 2 cups raisins. He loves them!