Heat a tablespoon or two of oil on medium/high in a large skillet and cook sausages for 5-8 minutes per side. Once browned, put enough water to cover the bottom of the pan, and put the lid on. The steam will continue to cook them and keep the moisture in the bangers as well as help prevent them from burning. Or roast sausages at 400°F/205°C for 10 minutes each side or until done. They are done when internal temperature is 160°F/72°C.