EATING MY EMPIRE
In a 5- to 6-quart slow cooker, combine onion and garlic. Season brisket with salt and pepper and place, fat side up, in slow cooker. Add broth. Cover and cook on high until brisket is fork-tender, about 6 hours. Remove brisket and thinly slice against the grain. Serve with onion and some cooking liquid; sprinkle with parsley.
If you make this ahead of time, cover and refrigerate brisket in cooking liquid, up to 1 week. Reheat in a 300-degree oven.