In the bowl of a mixer, beat the softened butter (or coconut oil), and both sugars.
Add in the egg and vanilla, beat until fluffy.
With the mixer running on low, sprinkle the gum, salt, soda, and baking powder.
Continue with the three flours.
Mix in the rolled oats and any add in's you wish (we like chocolate chips, cranberries, raisins, and white chocolate chips sometimes)
Place large tablespoons of dough on a cookie sheet. I can fit 12 per sheet (4 rows of 3).
Bake for 9-10 minutes. Once you remove, if they seem fluffy, settle the cookies, by firmly slamming the cookie sheet on the counter a couple of times. Let cool for a few minutes and remove to a cooling rack.
Store cookies in an airtight container or in the freezer!
Notes
nutrition includes chocolate chips and cranberries.