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Melt-in-Your-Mouth Slow Cooker French Onion Roast Recipe - Featured Image

Melt-in-Your-Mouth Slow Cooker French Onion Roast Recipe

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Learn how to make delicious Slow Cooker French Onion Roast. Easy recipe with step-by-step instructions.

  • Total Time: 45 minutes
  • Yield: 4 servings 1x

Ingredients

Scale

The key to this dish lies in selecting the right ingredients—fresh onions, quality beef, and a few simple seasonings that elevate the flavors without overwhelming them. Growing up, my mum always said cooking starts with respect for your ingredients. I’ve carried that lesson with me, especially when it comes to slow-cooked recipes where each component shines through.

  • 3 pounds beef chuck roast
  • 5 large yellow onions, thinly sliced
  • 3 cloves garlic, minced
  • 2 cups beef broth (low sodium preferred)
  • 1/2 cup dry white wine or extra beef broth
  • 2 tablespoons Worcestershire sauce
  • 2 teaspoons fresh thyme leaves or 1 teaspoon dried thyme
  • 2 tablespoons olive oil
  • Salt and freshly ground black pepper, to taste
  • Optional: 1 tablespoon balsamic vinegar for added depth

If you don’t have white wine on hand, extra beef broth works wonderfully. For a richer finish, some folks like to add a splash of balsamic vinegar—something I’ve grown fond of after experimenting in my own kitchen.

Instructions

  1. Start by seasoning your beef roast generously with salt and pepper on all sides. This is crucial to building flavor from the outset.
  2. Heat olive oil in a large skillet over medium-high heat. Brown the roast on all sides until you get a nice crust, about 4-5 minutes per side. This step locks in juices and creates a savory base.
  3. Remove the roast and set aside. In the same skillet, add the sliced onions and cook over medium heat, stirring often until they’re deeply caramelized and golden brown. This usually takes 20-25 minutes—patience pays off here!
  4. Add the minced garlic to the onions and cook for another 1-2 minutes until fragrant.
  5. Transfer the onions and garlic to the slow cooker. Place the roast on top, then pour in the beef broth, white wine, Worcestershire sauce, and thyme. If using, add the balsamic vinegar.
  6. Cover and cook on low for 8-9 hours, or on high for 4-5 hours, until the beef is fork-tender.
  7. Once done, remove the roast and let it rest for 10 minutes before slicing. Stir the sauce in the slow cooker—if you’d like, skim off excess fat or thicken the sauce with a cornstarch slurry on the stovetop.
  8. Serve the roast sliced with the rich onion sauce spooned over the top. Trust me, the slow cooker does all the magic here, but these steps help you get there perfectly every time.

  • Author: Jenny
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Main Dish
  • Method: Cooking
  • Cuisine: International