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Slow Cooker French Onion Pot Roast Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.9 from 49 reviews
  • Author: admin
  • Prep Time: 15 minutes
  • Cook Time: 8 hours
  • Total Time: 8 hours 15 minutes
  • Yield: 6 servings
  • Category: Main Dish
  • Method: Slow Cooking
  • Cuisine: American

Description

This Slow Cooker French Onion Pot Roast is a hearty, comforting dish that combines tender, slow-cooked chuck roast with the rich, savory flavors of French onion soup. Perfect for an effortless meal, the slow cooker tenderizes the beef to fork-ready perfection, while a buttery, onion-infused sauce enhances every bite. Ideal for family dinners or weekend meals, this recipe offers a delicious twist on classic pot roast.


Ingredients

Scale

Beef and Seasonings

  • 3-4 lb chuck roast
  • 1 tablespoon olive oil
  • 1 packet (1 oz) dry onion soup mix
  • 1 teaspoon dried thyme
  • 1 teaspoon black pepper

Liquids and Sauces

  • 2 cups beef broth
  • 1 cup French onion soup (canned or homemade)
  • 1 tablespoon Worcestershire sauce

Vegetables and Aromatics

  • 2 large onions, thinly sliced
  • 3 cloves garlic, minced

Finishing Ingredients

  • 3 tablespoons unsalted butter
  • 2 tablespoons cornstarch (optional, for thickening)
  • 2 tablespoons water (if using cornstarch)
  • Fresh parsley, for garnish (optional)


Instructions

  1. Sear the Roast: Heat olive oil in a large skillet over medium-high heat. This step helps develop a deep, caramelized crust on the roast, enhancing flavor and texture.
  2. Sear the Chuck Roast: Brown the chuck roast on all sides in the hot skillet, about 3-4 minutes per side, ensuring even coloration and sealing in juices.
  3. Transfer to Slow Cooker: Place the browned roast into the slow cooker, ready for slow cooking.
  4. Prepare the Sauce: Sprinkle the dry onion soup mix evenly over the roast to infuse it with rich onion and herb flavors.
  5. Mix Liquids and Pour: In a bowl, whisk together beef broth, French onion soup, Worcestershire sauce, dried thyme, and black pepper until combined, then pour this mixture over the roast in the slow cooker.
  6. Add Onions and Garlic: Arrange the thinly sliced onions and minced garlic around and on top of the roast to add aromatic depth to the dish.
  7. Slow Cook: Cover and cook on LOW for 8-10 hours or on HIGH for 4-5 hours until the meat is fork-tender and flavorful.
  8. Enhance Flavor: Stir in the unsalted butter at the end of cooking to enrich the sauce with a silky texture and subtle richness.
  9. Thicken the Sauce (Optional): If a thicker gravy is preferred, mix cornstarch and water in a small bowl and stir this slurry into the slow cooker.
  10. Cook to Thicken: Increase the slow cooker setting to HIGH and cook for an additional 10-15 minutes until the sauce has thickened to your liking.
  11. Serve and Enjoy: Plate the pot roast with generous spoonfuls of the rich onion sauce, ideally over mashed potatoes, rice, or crusty bread to soak up the delicious gravy.
  12. Garnish: Finish by sprinkling fresh parsley over the dish for color and a fresh herbal note, if desired.

Notes

  • For best flavor, searing the roast before slow cooking is recommended but can be skipped if short on time.
  • Use canned French onion soup for convenience or make your own for a fresher taste.
  • Adjust the cooking time depending on your slow cooker’s settings and the size of the roast.
  • The optional cornstarch slurry helps thicken the sauce but can be omitted for a lighter, broth-style gravy.
  • Leftovers reheat well and flavors often deepen overnight.