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Slow Cooker French Onion Roast Recipe | Easy & Delicious Dinner Idea

Slow Cooker French Onion Roast Recipe | Easy & Delicious Dinner Idea

This slow cooker French onion roast is rich, savory, and melt-in-your-mouth tender. Infused with caramelized onion flavor and cooked low and slow, it’s the perfect hands-off comfort meal to serve over mashed potatoes or crusty bread.

  • Total Time: 8 hours 15 minutes
  • Yield: 6 servings 1x

Ingredients

Scale

3 lb chuck roast

2 tbsp olive oil

2 large yellow onions, thinly sliced

3 cloves garlic, minced

1 tbsp Worcestershire sauce

1 tbsp balsamic vinegar

1 tsp dried thyme

1/2 tsp black pepper

1/2 tsp salt

1 packet onion soup mix

2 cups beef broth

Optional: 1 cup shredded Gruyère or Swiss cheese (for serving)

Instructions

1. Heat olive oil in a skillet over medium-high heat. Sear roast on all sides until browned. Set aside.

2. In the same pan, sauté onions for 8–10 minutes until soft and golden. Add garlic and cook 1 more minute.

3. Place onions and garlic in the bottom of a slow cooker. Add roast on top.

4. Sprinkle in onion soup mix, thyme, salt, and pepper. Add Worcestershire, balsamic vinegar, and beef broth.

5. Cover and cook on low for 8 hours or until roast is tender and falls apart.

6. Shred roast in the juices and serve hot over mashed potatoes or toasted bread. Top with cheese if desired.

Notes

• Add mushrooms for a deeper umami flavor.

• Toasted baguette slices make a great base for serving—like open-face French onion beef sandwiches.

• Leftovers make amazing sandwiches or pasta toss-ins.

  • Author: Mila Bryn
  • Prep Time: 15 minutes
  • Cook Time: 8 hours
  • Category: Dinner, Slow Cooker, Comfort Food
  • Method: Slow Cooking
  • Cuisine: American

Nutrition

  • Serving Size: 1 1/2 cups
  • Calories: 460
  • Sugar: 4g
  • Sodium: 820mg
  • Fat: 28g
  • Saturated Fat: 10g
  • Unsaturated Fat: 15g
  • Trans Fat: 0g
  • Carbohydrates: 7g
  • Fiber: 1g
  • Protein: 40g
  • Cholesterol: 95mg

Keywords: slow cooker french onion roast, crockpot beef onion roast, easy pot roast with onion, french onion chuck roast