Otis Spunkmeyer is the brand. We use the same cookies at my job. The secret is to let them sit for about 20-30 minutes after pulling the dough from the freezer(it's pre-shaped discs), and only bake them for 10-12 minutes at 350 fahrenheit instead of the recommended 15-16.
EDIT: And to anyone who loves those mini chocolate chip cookies some bakeries carry, Hope's Country Fresh Cookies. Same thing, let 'em thaw a little and underbake for a soft, chewy cookie.
EDIT: EDIT: Sorry, I'm bored as fuck at work, and realized I can share another trade secret. Got some of these cookies getting near sell-by? They've firmed up. Get yourself a jar of buttercreme icing, and an icing bag. Load the bag up, cut a decent sized point out of the tip, and make sandwich cookies. Fuckin' bomb, buttercreme works best as the filling.