In today’s world there are quite a few restrictions on what we can and cannot take onto airplanes. First it was nail clippers, now recently it has been any liquid. Soon we may need to travel with no luggage and completely naked, which will be better for some than others.
Your cookies should not be a problem, although security may insist upon trying one or two to make sure they are real cookies… just kidding. To be completely safe you can always call the airport and find out, but I have never heard of cookies being a problem on an airplane, and if they are it would only be a problem if you intended to carry them on the plane. You can always put them in a plastic contained and put them in your regular luggage. They may end up in Cleveland (unless that happens to be where you’re travelling, then they’ll end up in San Diego) but they should allow them on the plane, or a plane.
