French Onion Brisket: Easy Slow Cooker Dinner Step-by-step instructions

Before you start

Before you start, trim the brisket of excess fat, leaving a thin layer on top. Thinly slice the onions—about 1/4-inch thick—so they soften evenly. Have the beef consommé, brown gravy, and butter measured and ready.

A 6-quart slow cooker is ideal; if using a smaller one, you may need to cut the brisket to fit. No need to sear the meat first—this recipe is designed to be as simple as possible.

Instructions

Layer and Load

1. 1Layer the Brisket and Onions
   Place the trimmed beef brisket flat in the bottom of a 6-quart slow cooker. Pile the thinly sliced Vidalia onions over the top of the brisket, covering it as evenly as possible.
   Look for The brisket should sit snugly in the bottom, with onions mounded over.
   Tip Trimming excess fat helps the gravy stay rich, not greasy.
2. 2Pour in the Consommé
   Pour the beef consommé around the base of the brisket, being careful not to wash the onions off the top. The liquid should come about a quarter of the way up the sides of the meat.
   Look for The consommé pools around the brisket, not over the onions.
   Tip Pouring around the edges keeps the onion layer intact.
3. 3Add Gravy and Butter
   Pour the rich brown gravy over the brisket and onions. Dot the top with the pats of unsalted butter, distributing them evenly.
   Look for The butter melts into the gravy during cooking, adding shine.
   Tip Butter adds richness and helps caramelize the onions.

The raw brisket sits flat in the pot, topped with a mound of sliced onions. The consommé and gravy pool around the edges, and pats of butter dot the top. The pot looks full but not overflowing. Everything is ready to cook.

Slow Cook and Shred

4. 4Cover and Cook Low
   Cover the slow cooker and cook on LOW for 8 to 10 hours, until the brisket is fork-tender and easily shreds. Do not lift the lid during cooking. Let it rest for 3 minutes before slicing.
   Look for After 8 hours, the meat should shred easily with a fork.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Cooking on low yields the most tender results.
5. 5Rest and Shred
   Turn off the slow cooker. Remove the brisket to a cutting board and let it rest for at least 10 minutes. Then shred the meat with two forks, discarding any large pieces of fat.
   Look for The meat pulls apart easily, revealing moist, tender strands.
   Tip Resting lets the juices redistribute, keeping the meat moist.
6. 6Stir the Onions into the Gravy
   Stir the caramelized onions into the gravy in the slow cooker. Return the shredded beef to the pot and toss to coat with the onion gravy.
   Look for The gravy is thick, glossy, and filled with soft onion ribbons.
   Tip Tossing the beef in the gravy keeps it moist and flavorful.

After 8-10 hours, the kitchen smells rich and savory. The brisket is darkened, the onions have collapsed into soft ribbons, and the gravy is bubbling gently. The meat shreds easily with a fork, and the gravy is thick and glossy.

Serve and Savor

7. 7Toast the Buns
   Toast the brioche slider buns until golden and crisp. Place a generous mound of the shredded brisket on each bun and spoon extra onion gravy over the top.
   Look for The buns are toasted, the beef is glossy with gravy.
   Tip Toasting the buns prevents them from getting soggy.

The toasted brioche buns are golden and crisp. Piled high with shredded beef and ladled with onion gravy, they look irresistible. The first bite is tender, beefy, and sweet with caramelized onions.

Common mistakes

One common mistake is lifting the lid during cooking, which lets out heat and extends the cooking time. Trust the recipe and leave the lid on. Another mistake is using a lean cut like round or sirloin; brisket needs fat and collagen to become tender.

Overcooking can make the meat dry, but with the liquid in the pot, it's more forgiving. Finally, don't skip the resting step—it's crucial for juicy shredded beef.

How to tell it’s done

The brisket is done when it is fork-tender and shreds easily. Insert a fork into the thickest part; it should slide in with almost no resistance.

The internal temperature should read at least 145°F (63°C) for food safety, but because of the long cooking time, it will likely be much higher.

Let the meat rest for at least 10 minutes before shredding to allow the juices to redistribute. The onions should be soft and caramelized, and the gravy should be thick enough to coat a spoon.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest