I love cooking Corned Beef Brisket the traditional way, it is really simple. All you need to do is cook your brisket in a crock-pot on medium setting for about 4 - 5 hours depending on the size.
I purchased my brisket for St. Patrick's Day and it was about 6 lbs and it would not fit in my crock-pot, so I decided to roast in the oven and I tell you, what a great success. Nice and juicy with lot's of flavor.
Pre-heat oven 325 degrees and prepare a large roasting pan with aluminum foil for easy clean up.
Place corned beef brisket in roasting pan fat side down and add seasoning packet, diced onions, and garlic. Then add water to cover brisket.
Cover with aluminum foil and bake for about 4 - 5 hours (depending on the size). Check the package for cooking time. I estimated about 1 hour per pound. In addition, your oven temperature may determine how long it will take. In a few hours your kitchen will smell so wonderful.
When brisket is done, remove from pan and cover in aluminum foil and let rest for about 20 minutes before cutting.
After brisket has rested, trim visible fat from the top and slice brisket across the grain, nice thin slices. Serve with fresh steam cabbage, potatoes or carrots. Enjoy!