I mentioned earlier, brisket is a tough cut of meat. However, slow, moist cooking methods will make it tender and juicy, and the usual cooking method is to boil the corned beef on the stovetop. This would mean simmering it for about 3 hours for a three-pound brisket. This slow cooker corned beef and cabbage recipe eliminates the need for tending to a boiling pot. In addition, you end up with a delicious, tender and moist result.