Slow Cooker Brisket with Balsamic Onion Gravy: Tender, Flavorful, and Effortless

Pat the brisket dry with paper towels and season it generously with salt and pepper on all sides.
Sear the brisket:

In a large skillet, heat the olive oil over medium-high heat. Once the oil is hot, sear the brisket for 3-4 minutes on each side until it is browned. This step helps lock in flavor and creates a beautiful crust on the meat.
Prepare the slow cooker:

Transfer the seared brisket to the slow cooker. Add the sliced onions and minced garlic on top of the brisket.
Make the balsamic gravy:

In a small bowl, whisk together the beef broth, balsamic vinegar, brown sugar, Worcestershire sauce, thyme, and rosemary. Pour this mixture over the brisket and onions in the slow cooker.
Cook the brisket:

Cover the slow cooker and cook on low for 8-10 hours, or until the brisket is tender and easily shreds with a fork.
Thicken the gravy (optional):

Once the brisket is cooked, remove it from the slow cooker and set it aside. To thicken the gravy, whisk together the cornstarch and a little water in a small bowl, then stir it into the gravy in the slow cooker. Let it cook on high for an additional 10-15 minutes, until the gravy thickens to your desired consistency.
Serve:

Slice the brisket against the grain and serve with the balsamic onion gravy poured over the top. This dish pairs beautifully with mashed potatoes, roasted vegetables, or rice to soak up the flavorful gravy.
Serving and Storage Tips: