Preheat the oven to 350F. Prepare cookie sheets with baking paper
Sift the flour, salt, baking soda, and baking powder together into a large mixing bowl.
Mix in the oats and coconut. Set aside.
In a large mixing bowl, beat the butter, and sugars until fluffy.
Mix in the egg and then add the vanilla.
Mix in the flour mixture by hand, followed by the chocolate chips.
Cover and chill the dough for 30 minutes (or up to 3 days) in the refrigerator. If chilling for longer than an hour, remove from the fridge and sit at room temperature 30 minutes before baking as the dough will be quite hard.
Using an ice cream scoop, add the dough the prepared pan 2 inches apart.
Bake for 12-15 minutes or until the edges are golden brown.
Notes
For A Chewier CookieIf you like a chewier cookie, refrigerate the dough for at least 30 minutes before baking. Cooler fat spreads less resulting in a thicker, chewier cookie.Tips:Don't over bake your cookies. When oatmeal cookies come out of the oven, they should be slightly underdone. Leave them to set on the hot cookie sheet for a few minutes before transferring them to a cooling rack.Use softened butter: Soften your butter to room temperature. You'll know when it's soft enough when you can make a dent in it with your finger. Don't Over Mix: Once you add the flour, mix gently. Over mixing the dough will result in a tough cookie. When in doubt - finish the job by hand. Mix just until the flour is incorporated. Make Extra: Double the recipe and freeze half the dough, so delicious home-baked cookies are always close