Classic Oatmeal Butterscotch Chip Cookies

1 cup butter, softened
1 cup brown sugar
1 cup granulated sugar
2 eggs
1 teaspoon vanilla
1 teaspoon baking soda
1 teaspoon baking powder
1 teaspoon cinnamon
1 teaspoon salt
2 cups flour
2 3/4 cups oatmeal
2 cups butterscotch chips (or 1 cup semi-sweet chocolate and 1 cup butterscotch)

In a large bowl cream together the butter and sugars BY HAND. Add eggs and vanilla and stir until combined. Add baking soda, powder, cinnamon and salt and mix. Add flour, oatmeal, and chips. Mix until combined. Roll into balls and bake at 350ºF for 10-12 minutes.