Hands down, this is the easiest way to cook corned beef, and the results are tender and delicious. I got this recipe from Living Rich with Coupons but changed a couple of things to reflect our personal preferences. Recipe below is as I made it.
1 corned beef, about 2 1/2 lb.
1 bottle beer (I used Sam Adams)
1 onion, sliced
a handful of baby carrots
water to cover
Put onion slices and carrots in the bottom of the slow cooker. Place corned beef on top of the vegetables. Discard the seasoning packet. Pour beer over top, then add water until it is almost covering the meat.
Cover the slow cooker and cook on LOW for 8 to 10 hours. I cooked it for 9 1/2 and the meat was beautifully done. Remove the meat and let it rest, covered with foil, for about 15 minutes before slicing.
I prefer to cook the cabbage separately as I don't like the flavor of cabbage cooked in beer. So I just boil cabbage wedges in a pot on the stove for about an hour.