In Sept. we were allowed 2 pastries and a drink as a CS credit at Main Street Bakery in the MK, even in the evening. Most resort CS locations can do this too, but the number of items may differ (maybe 2 instead of 3). Not all places allow it all the time, so definitely ASK first, and you have better luck at the resorts than the parks.
Of course with all things Disney it often depends on the CM and the phase of the moon...............
Sometimes we just get a legitimate CS meal but use it as a snack to share, for example a pizza for one meal, or an order of chicken nuggets with apple slices or grapes instead of fries.