I am very very much not an expert on any of this. All hearsay and casual observation.
That being said, it seems to me that the people I know who do this sort of thing (medical cannabis users) are using butter or oil and cooking their weed in crockpots to create intermediary substances that are then used in cookies, brownies, &etc. The medical stuff is actually graded right on the package, like for example “27.5% THCA” or “3% CBD”.