i dont mean just heating things through or doing bacon or a baked potato, i mean like casseroles, bake cakes etc?
i have found in a pile of prop books a load of 'cooking in the microwave' books and although i knew it was done i am surprised by the sheer amount of stuff you can supposedly cook in one
however, many years ago, when we were kids, me and my sister attempted to make a sponge cake in one ... we had much fun, bounding it around the kitchen floor - literally it bounced! = it was like a rubber disc!
I had a microwave, oven and grill all in one. It drove me mad. I hated it, it was stainless steel and a nightmare to keep clean. I gave it away in the end. No help to you I know, sorry.
I used to cook a lot in the microwave but since acquiring a halogen oven my microwave use is reduced.
I find it (microwave) very useful when making roux-based sauces, and scrambled eggs - in both cases I make frequent incursions to check progress and to stir - I find this much more successful than using a hob where I often get lumps and/or burn. Probably a personal quirk.