Begin by preparing your vegetables. Chop the onions, carrots, and potatoes into bite-sized pieces and place them at the bottom of your slow cooker.

Next, take your corned beef brisket and carefully position it on top of the vegetables, fat side facing up.

Now, pour enough beef broth or water into the slow cooker to cover at least half of the brisket.

Sprinkle the included spice packet or your homemade spice mix evenly over the corned beef and vegetables.

Cover the slow cooker with its lid and set it to cook on low for 8 to 10 hours or high for 4 to 6 hours.

One hour before the cooking time is complete, carefully add the cabbage wedges to the slow cooker.

Once the cooking time is up, remove the brisket from the slow cooker, let it rest for a few minutes, slice it, and serve with the vegetables.