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Cheesy French Onion Scalloped: 5 Layers of Comfort

Cheesy French Onion Scalloped
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A cozy and indulgent casserole that combines the sweet richness of caramelized onions with tender slices of Yukon Gold potatoes and layers of melted cheese. Perfect for holidays, family dinners, or any comfort food craving.

Ingredients

Scale
  • 3 pounds Yukon Gold Potatoes, thinly sliced
  • 3 large Yellow Onions, thinly sliced
  • 4 tablespoons Butter
  • 1 tablespoon Olive Oil
  • 2 cloves Garlic, minced
  • 1 teaspoon dried Thyme or 1 tablespoon fresh Thyme
  • 1 cup Beef Broth
  • 1½ cups Heavy Cream
  • 1½ cups Gruyère Cheese, shredded
  • 1 cup Mozzarella Cheese, shredded
  • 1½ teaspoons Salt
  • 1 teaspoon Black Pepper
  • ½ cup Parmesan Cheese, grated

Instructions

  1. Preheat oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
  2. In a large skillet over medium heat, melt butter and olive oil. Add onions and cook for 25–30 minutes until caramelized. Add garlic and thyme in the last few minutes, then pour in broth and reduce slightly.
  3. Layer one-third of the potatoes in the baking dish. Add salt, pepper, cheeses, caramelized onions, and a splash of cream. Repeat for 3 total layers.
  4. Pour remaining cream over the top and finish with extra cheese.
  5. Cover with foil and bake for 35 minutes. Remove foil and bake for another 25–30 minutes until golden and bubbly.
  6. Let rest for 10–15 minutes before serving. Garnish with fresh thyme if desired.

Notes

    Nutrition

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