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Slow-cooked brisket with balsamic onion gravy served in a dish

5-Star Slow Cooker Brisket with Balsamic Onion Gravy – Tender, Rich & Easy


  • Author: Velma
  • Total Time: 8 hours 20 minutes
  • Yield: 8 servings 1x
  • Diet: Gluten Free

Description

Enjoy melt‑in‑your‑mouth slow cooker brisket topped with rich balsamic onion gravy—a hands‑off comfort‑food favorite.


Ingredients

Scale

For the Brisket:

  • 45 lb beef brisket (flat cut or point cut)
  • 1 tbsp kosher salt
  • 1 tsp black pepper
  • 2 tbsp olive oil
  • 34 large yellow onions, thinly sliced
  • 4 garlic cloves, minced
  • 1 tbsp tomato paste
  • 2 tsp dried thyme (or 1 tbsp fresh)
  • 1 cup beef stock
  • ½ cup balsamic vinegar
  • 2 tbsp brown sugar

Instructions

1. Sear the Brisket

  • Pat the brisket dry with paper towels.
  • Season generously with salt and pepper.
  • Heat oil in a heavy skillet over medium-high heat.
  • Sear brisket on all sides (about 3–4 minutes per side) until browned. Set aside.

2. Caramelize the Onions

  • In the same skillet, add sliced onions. Cook over medium heat for 15–20 minutes, stirring occasionally, until golden brown and soft.
  • Add garlic and tomato paste. Cook 1–2 minutes.
  • Pour in balsamic vinegar, scraping up any browned bits.
  • Add brown sugar and stir until glossy.

3. Prepare the Slow Cooker

  • Transfer the onion mixture to the slow cooker.
  • Place brisket on top.
  • Add beef stock, thyme, and any optional extras.
  • Cover and cook:
    • Low: 8–10 hours
    • High: 4–6 hours

4. Rest and Slice

 

  • Remove brisket from the cooker and rest for 15 minutes.
  • Slice against the grain.
  • Prep Time: 20 Minutes
  • Cook Time: 8 hours
  • Category: recipe
  • Cuisine: American

Nutrition

  • Serving Size: 8 servings
  • Calories: 430
  • Sugar: 6g
  • Sodium: 480mg
  • Fat: 28g
  • Saturated Fat: 10 g
  • Trans Fat: 0g
  • Carbohydrates: 12g
  • Fiber: 2g
  • Protein: 35g
  • Cholesterol: 110mg

Keywords: Slow Cooker Brisket with Balsamic Onion Gravy