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Slow Cooker Texas Beef Brisket for a Crowd

Slow cooker Texas beef brisket made tender and fork-ready, with a smoky-sweet braising sauce that reduces into a glossy finish. Sear first for a deep crust, then cook low-and-slow until it practically melts into the pan juices.
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Prep Time 25 minutes
Cook Time 10 hours
resting 25 minutes
Total Time 10 hours 50 minutes
Servings: 10 servings
Course: Dinner
Cuisine: Southern
Calories: 520
Ingredients Equipment Method Notes

Ingredients
  

Brisket
  • 5.5 lb beef brisket, flat cut Fat cap trimmed to about 1/4 inch.
  • 2 tsp kosher salt
  • 1.5 tsp black pepper
  • 1.5 tsp smoked paprika
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 0.5 tsp cayenne pepper
  • 1 tbsp olive oil
Braising Sauce
  • 1 yellow onion Sliced into rings.
  • 5 clove garlic cloves Smashed.
  • 1 cup beef broth
  • 0.5 cup apple cider vinegar
  • 0.5 cup ketchup
  • 3 tbsp Worcestershire sauce
  • 2 tbsp brown sugar
  • 1 tbsp Dijon mustard
  • 1 tsp liquid smoke
  • 1 tsp chili powder

Equipment

  • 1 cast iron skillet
  • 1 Dutch oven
  • 1 sheet pan

Method
 

Season and rest the brisket
  1. In a small bowl, combine kosher salt, black pepper, smoked paprika, garlic powder, onion powder, and cayenne pepper.
  2. Rub the spice mixture all over both sides of the brisket, pressing firmly so it adheres.
  3. Let the brisket rest at room temperature for 20–30 minutes.
Sear for a deep crust
  1. Heat olive oil in a large skillet over medium-high heat until shimmering.
  2. Sear the brisket fat-side down for 4–5 minutes until a deep golden-brown crust forms, then flip.
  3. Sear the other side for 3–4 minutes to build more crust.
Build the slow cooker braise
  1. While the brisket sears, whisk together beef broth, apple cider vinegar, ketchup, Worcestershire sauce, brown sugar, Dijon mustard, liquid smoke, and chili powder until smooth.
  2. Scatter sliced yellow onion and smashed garlic across the bottom of a 7–8 quart slow cooker.
  3. Place the seared brisket on top, fat-side up.
  4. Pour the braising sauce over and around the brisket so the liquid comes about halfway up the sides.
Slow cook until fork-tender
  1. Cover and cook on LOW for 9–10 hours, until the brisket is fork-tender and pulls apart easily at the thickest point.
  2. If using HIGH, cook for 5–6 hours until fork-tender at the thickest point.
Rest, reduce, and serve
  1. Carefully remove the brisket to a cutting board and let it rest for 15–20 minutes.
  2. Slice against the grain, then arrange the brisket on a large platter.
  3. Skim excess fat from the cooking juices in the slow cooker.
  4. Pour the juices into a saucepan and simmer over medium heat for 10 minutes to reduce into a rich glossy sauce.
  5. Spoon the reduced sauce generously over the brisket before serving.

Notes

For maximum tenderness, don’t skip the initial skillet sear—those browned bits help build the sauce’s depth. Refrigerate leftovers in a sealed container up to 4 days; rewarm gently to keep the brisket juicy. Freezing is yes (up to 3 months). For a lower-sugar option, reduce or omit the brown sugar while keeping the rest of the sauce ratios the same.