You can make french toast, yes. My understanding is you just dip the bread in the eggwash and dump it in the bag, and toast away. Hot Dogs I suppose you could do, but I think you probably would need to slice them in half lengthwise so it crisped up good. I'll try those later. Hamburgers would be difficult I think, too much grease and I think you'd need to run the bags thru several toasting sessions to completely cook a patty through. Thin-sliced steak such as london broil might work well, however, because you want to eat that medium rare. Optimally I think these are really best for sandwiches and panini-type things. I hear you can also do eggs in them as well -- I'm going to try that probably tomorrow. The key to this is having a refrigerator mise-en-place of prepared ingredients such as par-cooked steak, cold cuts, cheese and garlic bread spread all ready to go. Ths product screams for leftovers like last night's broiled chicken, meatloaf slices, turkey, or ham. So far we have only tried it with regular white bread toast but I am thinking French, sliced Italian peasant loaf, ciabatta or cuban type bread, flattened a bit into the bags would work really well for paninis.