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French Onion Stuffed Pork Loin: A Savory, Elegant Dinner With Minimal Effort


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  • Author: Ava Parker
  • Total Time: 1 hr 25 mins
  • Yield: 6 servings
  • Diet: Gluten Free

Description

A juicy pork loin stuffed with caramelized onions, melted cheese, and herbs, inspired by the rich flavors of classic French onion soup.


Ingredients

  • 1 (2–3 lb) pork loin, butterflied
  • 3 large onions, thinly sliced
  • 2 tbsp butter
  • 1 tbsp olive oil
  • 2 cloves garlic, minced
  • 1 tsp fresh thyme (or 1/2 tsp dried)
  • 1/2 cup beef broth
  • 1 cup shredded Gruyère or Swiss cheese
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1 tbsp Dijon mustard
  • Kitchen twine for tying


Instructions

  1. Preheat oven to 375°F (190°C).
  2. In a large skillet, heat butter and olive oil over medium heat. Add onions and cook until deeply caramelized, about 20–25 minutes.
  3. Stir in garlic and thyme, cooking 1 minute more.
  4. Add beef broth and simmer until mostly reduced. Remove from heat and let cool slightly.
  5. Season the butterflied pork loin with salt and pepper, then spread with Dijon mustard.
  6. Spread the caramelized onions evenly over the pork and sprinkle with cheese.
  7. Tightly roll the pork loin and secure with kitchen twine.
  8. Place in a baking dish and roast for 50–60 minutes, or until internal temperature reaches 145°F (63°C).
  9. Let rest for 10 minutes before slicing.

Notes

  • Use Gruyère cheese for the most authentic French onion flavor.
  • Make extra caramelized onions for serving on top.
  • Allowing the pork to rest helps retain juices.
  • Prep Time: 25 mins
  • Cook Time: 60 mins
  • Category: Main Dish
  • Method: Roasting
  • Cuisine: French