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French Onion Potato Bake

French Onion Potato Bake

Le French Onion Potato Bake est un gratin généreux et fondant qui marie deux classiques de la cuisine française : les pommes de terre crémeuses et les saveurs caramélisées de la soupe à l’oignon. Ce plat chaleureux est parfait pour accompagner un rôti, un poulet grillé ou même être servi seul avec une salade verte.
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Prep Time 25 minutes
Cook Time 1 hour
Total Time 1 hour 24 minutes
Ingredients Method

Ingredients
  

  • For the casserole:
  • 1.5 kg 3 lbs potatoes, peeled and thinly sliced
  • 1 medium onion thinly sliced
  • 2 tablespoons olive oil
  • 1/2 teaspoon salt
  • 1/4 teaspoon freshly ground black pepper
  • 1 cup sour cream
  • 1 cup heavy cream
  • 1 cup French onion soup store-bought or homemade
  • 1 cup shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • 1 tablespoon fresh thyme chopped (or 1 teaspoon dried thyme)
  • For the topping:
  • 1 cup French fried onions store-bought
  • 1/2 cup shredded cheddar cheese optional, for extra cheese flavor

Method
 

  1. Preheat your oven to 375°F (190°C) and grease a 9×13-inch baking dish.
  2. In a large skillet, heat the olive oil over medium heat. Add the sliced onion and cook for 8-10 minutes, stirring occasionally, until the onion is caramelized and golden brown.
  3. In a large bowl, combine the sour cream, heavy cream, French onion soup, salt, and pepper. Mix until well combined.
  4. Add the caramelized onions and chopped thyme to the cream mixture, stirring to incorporate.
  5. Layer the thinly sliced potatoes in the prepared baking dish, spreading them out evenly. Pour the cream and onion mixture over the potatoes, ensuring all the layers are covered.
  6. Sprinkle the shredded mozzarella and Parmesan cheeses evenly over the top of the potatoes.
  7. Cover the baking dish with foil and bake for 45 minutes. After 45 minutes, remove the foil and bake for an additional 15-20 minutes, or until the potatoes are tender and the top is golden and bubbly.
  8. In the last 10 minutes of baking, sprinkle the French fried onions on top of the potatoes and bake uncovered until the onions are crispy.
  9. Remove from the oven and let the dish rest for 5-10 minutes before serving.