The OP's post is either Tongue in Cheek, or extremely Naive! I suspect the former so will respond in kind!
LP Microwaves are presently only available for installation under the BBQ and have yet to be approved for use in RV's.! They tend to get very Hot!
The Wood burning variety are also currently unavailable for RV 's and can only be installed in a Cabin in the Woods or by a Lake!
There is of course another option ,Solar! these require no permanent installation and can be set up outdoors on the Picnic Table or even directly on the ground! Food prepared in a Solar Microwave is delicious and there is no danger of setting the Rig on Fire. The only downside to a Solar Microwave is that they are only usable in direct Sunlight!
They can be used in conjunction with the Totally Awesome Solar Clothes Dryers!
I have heard rumours that an newer inert gas model is being tried by various chef's but may not be suitable in an RV either!