Pop-Tarts are shelf-stable rectangular pastries, meant to be warmed in a toaster or eaten as they are. Kellogg's builds the S'mores flavor around the campfire combination: a chocolate and marshmallow-flavored filling inside a graham cracker crust, finished with chocolate frosting. The box holds twelve pastries, packed as six sealed foil pouches with two pastries in each.

Kellogg's describes them as tastiest toasted, though the pouches are made to be opened and eaten anywhere. Each pouch stays sealed until it is opened, so the two-pastry packs travel intact in a lunch bag or a desk drawer, and the box keeps at room temperature. Frosted S'mores is also sold in a 13.5 oz box and in single 3.3 oz packs, making this the larger of the everyday sizes.