Toast on cast iron (Skillet or grill) is basically the outside layers of a grilled cheese. Next time you make a homemade sandwich with cheese (breakfast or otherwise), prepare the insides first. Then make a traditional grilled cheese. Split it open while the cheese is still gooey, and wrap the toast around the stuffing. It's magnificent.
Related, use something other than American cheese. Provolone, Havarti, Jack, and Mozzarella all work well.
(Reposted Awesomeness)
Spread garlic butter on two slices of sourdough bread and place butter side down on a hot grill. Go light on the garlic - I've skipped the premade garlic butter at times, and rubbed a garlic clove on the bread before spreading the butter. Just a hint of garlic, and not too much butter is best.
Add a handful of shredded cheese to each slice, then a couple basil leaves on top of the cheese. It'll melt in a minute or two. Personally, I like gooey cheese - Swiss, Havarti, Muenster, and a couple I can't spell.
Drizzle honey (thank you, Oprah) on each slice.
Add a slice of cold beefsteak or brandywine tomoto and put the grilled cheese together.
Enjoy.