instant pizza...
Grab a slice of toast (sourdough rolls work best if possible, although an english muffin will do, or anything breadlike for that matter)
Toss it into the toaster untill slighty golden/crunchy(will prevent soggyness later)
Spread ketchup on the bread, sprinkle on a little oregeno and garlic powder (tomato sauce such as Ragu will work as well)
Put a slice or two of cheese on top
Add olives mushrooms and salami (hell, any meat or veggie that you have around will work)
Put it in the microwave untill cheese is melted.
Enjoy!
* you can also use an oven if preferred.
And for an even lighter snack....
Salami and Ritz Crackers (cheeze and mustard optional)
Cheeze on top of a ricecake (popcorn cake thingys) Toss in the microwave untill cheese melts
* Edit to let you know that the cheesy garlic bread 455 posted above will go excellent with this pizza.