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Creamy Caramelized Onion Gruyère Scalloped Potatoes Easy Recipe

creamy caramelized onion gruyère scalloped potatoes - featured image
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A rich and silky scalloped potato gratin featuring slow caramelized onions and nutty Gruyère cheese, perfect as a comforting yet elegant side dish.

Ingredients

Scale
  • 2 pounds Yukon Gold potatoes, peeled and thinly sliced (about 1/8 inch or 3 mm thick)
  • 2 large yellow onions, thinly sliced
  • 3 tablespoons unsalted butter
  • 2 cups heavy cream (or half-and-half for a lighter option)
  • 1 ½ cups grated Gruyère cheese (about 150 g)
  • 2 cloves garlic, minced
  • 1 teaspoon chopped fresh thyme leaves (or ½ teaspoon dried thyme)
  • Salt to taste
  • Freshly ground black pepper to taste
  • A pinch of freshly grated nutmeg (optional)

Instructions

  1. Caramelize the onions: Heat 3 tablespoons of butter over medium-low heat in a skillet. Add the thinly sliced onions and a pinch of salt. Stir occasionally, letting the onions soften and turn golden brown, about 30 minutes. Add a splash of water if they start to stick.
  2. Preheat the oven to 375°F (190°C). Grease a 9×13-inch baking dish lightly with butter.
  3. Slice the peeled potatoes thinly and uniformly using a mandoline or sharp knife. Place in a large bowl.
  4. In a separate bowl, combine the heavy cream, minced garlic, chopped thyme, freshly grated nutmeg, salt, and pepper. Stir well.
  5. Stir the caramelized onions into the cream mixture.
  6. Layer the gratin: Arrange a layer of potato slices on the bottom of the baking dish, overlapping slightly. Pour a portion of the cream-onion mixture over the potatoes, then sprinkle a handful of grated Gruyère. Repeat layering potatoes, cream mixture, and cheese until all ingredients are used, finishing with a generous cheese layer on top.
  7. Cover the dish loosely with foil and bake for 40 minutes. Remove the foil and bake for an additional 20 minutes or until the top is golden brown and bubbly and the potatoes are tender when pierced with a fork.
  8. Let the gratin rest for 10 minutes before serving to allow the sauce to thicken and make slicing easier.

Notes

Caramelize onions slowly over medium-low heat for best flavor. Use a mandoline for uniform potato slices to ensure even cooking. Let the gratin rest before serving for better texture and cleaner slices. If potatoes are not tender after baking, cover and bake 10-15 minutes longer. For dairy-free, substitute cream and cheese with plant-based alternatives.

Nutrition

Keywords: scalloped potatoes, caramelized onions, Gruyère, creamy potato gratin, comfort food, easy side dish, cheesy potatoes

Find it online: https://elvafood.com/creamy-caramelized-onion-gruy-e-re-scalloped-potatoes-easy-recipe/