How would you do a roast in the oven? What cut? What size? Don't want to do a big one. Or would I be better off just cooking a steak?
I wouldn't advize you to cook a steak it will get quite tough.
For roast lamb etc I like a nice mirepoix on the base of the tray with water so it doesn't burn. Season the meat with salt and pepper. Make cuts in the meat and stuff it with some fresh thyme or rosemary.
Smother the whole roast with seeded mustard or Dijon mustard.
Place baking paper over the top and ontop of that some alaminium foil.
Cooking times will vary depending on the size and how you want it cooked.