Slow Cooker French Onion Pork Roast 🧅🍖

This tender, flavorful pork roast is slow-cooked with caramelized onions, French onion soup, garlic, and herbs until it falls apart. Serve it over mashed potatoes, rice, or buttered noodles for a comforting family meal.

Servings: 6–8
Prep Time: 15 minutes
Cook Time: 8–10 hours (Low) or 4–5 hours (High)
Total Time: Up to 10 hours

Ingredients

For the Pork

• 3–4 lb (1.4–1.8 kg) boneless pork shoulder (Boston butt) or pork loin
• 2 tablespoons olive oil
• 1 teaspoon kosher salt
• 1 teaspoon black pepper
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon dried thyme
• 1 teaspoon smoked paprika (optional)

For the Onion Sauce

• 2 large yellow onions, thinly sliced
• 3 cloves garlic, minced
• 2 tablespoons butter
• 1 (10.5 oz) can condensed French onion soup
• 1 cup low-sodium beef broth or chicken broth
• 1 tablespoon Worcestershire sauce
• 1 teaspoon Dijon mustard (optional)
• 2 sprigs fresh thyme or 1 teaspoon dried thyme
• 1 bay leaf

To Thicken the Gravy (Optional)

• 2 tablespoons cornstarch
• 2 tablespoons cold water

Garnish

• Fresh parsley, chopped
• Fresh thyme leaves

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Instructions

1. Season and Sear the Pork

1. Pat the pork dry with paper towels.
2. Mix together the salt, pepper, garlic powder, onion powder, thyme, and smoked paprika.
3. Rub the seasoning all over the pork.
4. Heat olive oil in a large skillet over medium-high heat.
5. Sear the pork for 2–3 minutes per side until browned.

2. Caramelize the Onions

1. In the same skillet, melt the butter.
2. Add the sliced onions and cook for 10–15 minutes, stirring occasionally, until soft and golden.
3. Stir in the garlic and cook for 30 seconds.

3. Assemble in the Slow Cooker

1. Spread half of the onions in the bottom of the slow cooker.
2. Place the seared pork on top.
3. Add the remaining onions.
4. Pour in the French onion soup, broth, Worcestershire sauce, and Dijon mustard.
5. Add the thyme sprigs and bay leaf.

4. Slow Cook

• Low: 8–10 hours (recommended)
• High: 4–5 hours

The pork is done when it reaches an internal temperature of 195–205°F (90–96°C) for shredding or 145°F (63°C) if using pork loin and slicing.

5. Make the Gravy (Optional)

1. Remove the pork and keep warm.
2. Discard the bay leaf and thyme sprigs.
3. Whisk together the cornstarch and cold water.
4. Stir the slurry into the cooking juices.
5. Cook on High for 10–15 minutes, or transfer the liquid to a saucepan and simmer until thickened.

6. Serve

Slice or shred the pork and spoon the rich onion gravy over the top. Garnish with fresh parsley and thyme.

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Serving Suggestions

Pair with:

• Creamy mashed potatoes
• Buttered egg noodles
• Steamed white or brown rice
• Roasted carrots
• Green beans
• Buttered peas
• Crusty French bread
• Roasted Brussels sprouts

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Variations

• Cheesy French Onion: Top the cooked pork with sliced provolone, Swiss, or Gruyère cheese and broil until melted.
• Mushroom Version: Add 8 oz (225 g) sliced mushrooms to the onions.
• Herb Upgrade: Add fresh rosemary for extra depth.
• Wine Boost: Replace ½ cup of the broth with dry white wine.

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Storage

Refrigerator: Store in an airtight container for up to 4 days.

Freezer: Freeze the pork with its gravy for up to 3 months. Thaw overnight in the refrigerator before reheating.

Reheating: Warm gently on the stovetop or in the microwave with a little extra broth to keep the meat moist.

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Approximate Nutrition (Per Serving, based on 8 servings)

• Calories: 410
• Protein: 39 g
• Carbohydrates: 8 g
• Fat: 24 g
• Fiber: 1 g
• Sugar: 3 g
• Sodium: 620 mg

Tips for the Best Pork Roast

• Pork shoulder gives the most tender, shred-worthy results, while pork loin is leaner and best sliced rather than shredded.
• Searing the pork and caramelizing the onions before slow cooking adds rich, restaurant-quality flavor.
• Let the cooked pork rest for 10 minutes before slicing or shredding to retain its juices.
• The leftovers make excellent sandwiches, sliders, tacos, or baked potatoes topped with the onion gravy.