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Slow Cooker Brisket with Braised Onions Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 40 reviews
  • Author: Taylor
  • Prep Time: 1 hour
  • Cook Time: 4 hours
  • Total Time: 5 hours
  • Yield: 10 servings
  • Category: Main Course
  • Method: Baking
  • Cuisine: American
  • Diet: Kosher

Description

This Simplest Brisket with Braised Onions recipe offers a straightforward yet deeply flavorful way to prepare beef brisket. With a tender crusted brisket, richly caramelized onions, garlic, tomato paste, and hearty carrots slowly braised together, this dish yields a comforting and satisfying meal perfect for family gatherings. Ideal for overnight resting to deepen flavors, it promises a melt-in-your-mouth experience that feeds 8 to 10 people.


Ingredients

Scale

Brisket

  • 6 pounds beef brisket (first-cut)
  • Kosher salt (about 2 tablespoons for seasoning)
  • Freshly ground black pepper (to taste)
  • 1 to 2 tablespoons vegetable oil

Vegetables and Aromatics

  • 3 pounds yellow onions (about 8 medium), halved, peeled, sliced 1/4-inch thick
  • 6 garlic cloves, peeled and smashed
  • 4 tablespoons (65 grams) tomato paste
  • 1 1/2 pounds (680 grams) thick carrots, peeled, trimmed, and cut into 1-inch chunks


Instructions

  1. Preheat the oven: Set your oven to 350°F (175°C) to prepare for braising the brisket.
  2. Prepare the brisket: Trim the brisket so only a thin layer of fat remains, about 1/8- to 1/4-inch thick. Season the top generously with kosher salt and freshly ground black pepper.
  3. Brown the brisket: Heat a large 6.5-quart Dutch oven over high heat with 1 to 2 tablespoons of vegetable oil until very hot. Place the brisket seasoned side down in the pan, then season the top side with salt and pepper. Cook each side for 5 to 7 minutes until crusty and well browned. If the brisket doesn't fit, brown in halves. Remove the browned brisket and set it aside on a plate to rest.
  4. Prepare the onions: While the brisket browns, halve, peel, and slice the onions into generous 1/4-inch thick slices. Using a food processor with a slicing blade can speed this process.
  5. Cook the onions: Add the sliced onions to the now-empty Dutch oven. Season with salt and pepper from the reserved bowl and cook, stirring frequently, until the onions soften and turn a rich brown color, about 10 to 15 minutes. Add the garlic cloves and cook for an additional minute until fragrant.
  6. Add tomato paste and carrots: Stir in the tomato paste to coat the onions and garlic, cooking briefly to deepen the flavor, then add the carrot chunks.
  7. Braise the brisket: Return the browned brisket to the pot, nestling it among the vegetables. Add enough water or beef stock to come about halfway up the brisket, ensuring a moist braising environment.
  8. Cook in the oven: Cover the Dutch oven with its lid and transfer it to the preheated oven. Bake for 3 to 4 hours until the brisket is fork-tender and the flavors meld beautifully.
  9. Rest the brisket: Ideally, let the brisket rest overnight in the refrigerator, covered, to allow the flavors to develop further and make slicing easier.
  10. Serve: Slice the brisket against the grain and serve warm with the braised onions and carrots, spooning some of the cooking juices over the top for extra richness.

Notes

  • Use a large 6.5-quart Dutch oven or an equivalent heavy, oven-safe pot with a lid for best results.
  • Trimming the fat to about 1/8- to 1/4-inch helps achieve a good crust while retaining moisture.
  • Season generously but evenly with kosher salt and freshly ground black pepper for balanced flavor.
  • Overnight resting enhances the flavor and texture, but if short on time, the brisket can be served after cooling for an hour.
  • If the brisket does not fit in one piece, brown it in halves and braise together.
  • Carrots and onions add natural sweetness and complement the brisket’s savory depth beautifully.
  • Use beef stock instead of water for a richer braising liquid, if desired.

Nutrition

  • Serving Size: 1 slice (about 200 grams)
  • Calories: 450 kcal
  • Sugar: 7 g
  • Sodium: 550 mg
  • Fat: 20 g
  • Saturated Fat: 7 g
  • Unsaturated Fat: 11 g
  • Trans Fat: 0 g
  • Carbohydrates: 15 g
  • Fiber: 3 g
  • Protein: 45 g
  • Cholesterol: 140 mg