My Motor home has both MW and Propane oven AND.. (This is an add on) an ELECTRIC oven.
The Electric is an AROMA brand, it's a table top (Counter top) oven bigger than a toaster oven but .. Well it's also a 4 slice toaster. It is large enough to have a rotisserie bult in and it can do a game hen or even a small chicken on the spit as well as a 9" pie or cheesecake (I don't do other cakes) it will hold a 9x11 pan, I used it a few days ago to bake some Candied Butternut Squash (MAN was that good).
But it too only works on shore/generator power.
You need to inspect it, Often there is room for an oven but the Original Owner choose to add to storage instead.. I use my oven mostly for storage but . Well, if I am cooking something that won't fit the Aroma, or if I'm not plugged in... I use Propane oven.
One suggestion, Put a pizza stone in the propane oven on the "Floor" just above the burner.. Or an unglazed clay tile of about the same size.
Home is where I park it!