I'm a bit of a beginner to cooking and I like doing casseroles as they're easy and quick to prepare but I'm looking for tips to improve. I usually use steak or pork and chicken or beef gravy and throw in whatever veg is available, usually mushrooms, onions, carrotts, garlic etc. but sometimes the gravy overpowers the rest of the flavours and sometimes the veg at the top gets overdone. When is the best time to season and to throw the veg in and what's the best way to get the meat nice and tender, I don't usually bother browning it. Also, I usually cook it for about 90-120 mins on about 150-180, any guidelines on that? Thanks