Lol, my microwave broke last month and we were a bit tight on cash at the time, so I said 'ohh, we can cope until payday - easy!!' How wrong was I?? i'd gone and bought herb potatoes that you steam in the micro for tea
ended up having to roast them.
Needles to say we bought a cheap one a day later lol
I would either pop it in boiling water to warm through (for veg). For meats etc i'd pop it in a small pan of water and bring to boil to heat through thoroughly