You can use CS to get breakfast at all of the resort food courts. There are a few places at the parks but the only one that sticks out in my mind is the Main Street Bakery at MK - they have ala carte items.
I have used a CS credit for breakfast at Starring Rolls. The Electric Umbrella no longer serves breakfast. Nor does the Fountainview Cafe (they now serve only Edy's Ice Cream - no pastries or coffees). Sunshine Seasons has pretty good breakfast offerings and they take the DDP.
BTW - Captain Cooks does offer a smaller version of Tonga Toast. Can't speak to how it tastes as I hate the stuff - tried it once at Kona Cafe...never again!