In a large mixing bowl beat the butter and sugar together until creamed. (You can use a hand mixer but I do this by hand.) Add the baking soda, baking powder, vanilla extract and salt. Stir or beat until combined
Add the eggs and beat/stir until just combined; you don’t want to over mix the eggs.
Add the flour and beat/stir in. Add the oats and chocolate chips. By this point it is best to use a spoon and not a mixer because the dough will be stiff. Stir until combined. (Now is the time to stir in your add-ins if you decide to do so.)
Preheat oven to 350.
Drop dough by using a rounded teaspoon or your hands, two inches apart on an ungreased baking sheet.
Bake for 8-10 minutes or until the edges are golden. Let cool on the baking sheet for 1 minute before transferring to a cooling rack.
Recipe by Grain Mill Wagon at https://www.grainmillwagon.com/oatmeal-chocolate-chip-cookies-2/