If you have
1. a larger microwave,
2. a large battery bank, or
3. a good sized generator, or,
4. usually have shore power,
consider a microwave pressure cooker.
They're
1. small, light, and take up very little space
2. made out of some form of fiber reinforced plastic,
3. easy to heat up,
4. won't cook (heat) the cabin up as well as your meal
5. probably suited to small cooking tasks such as appropriate for a cruising couple, and, if necessary
6. you could use two of them in succession to prepare more elaborate meals
Worth considering, anyway!
We have one and it's usually much easier than using the larger metal version at home, anyway.
By purchasing one and using it at home, you would get a very good idea of their capabilities.
Bon Appetit" :smilep
Joe. :teeth :thup