Mel, with mushies, I grate them into stuf like bolegnaise sauce, and almost anything I cook in the slow cooker. I don't think you can taste it at all, though I like mushies, so even if you could taste it I wouldn't mind, lol!
I make a veggie lasagne and moussaka with eggplant, but they are pretty in depth recipes and long cooking processes. If you wan tthe recipes, let me know.