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Easy French Onion Potato Bake: Comfort in Every Bite

A spoonful lifting a creamy, cheesy slice of french onion potato bake with a golden brown, crispy top.
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This easy French onion potato bake recipe delivers rich, comforting flavors using tender potatoes, sweet caramelized onions, and savory broth, topped with melty Gruyère cheese for a perfect side dish.

Ingredients

Scale
  • 3 pounds Russet potatoes, peeled and thinly sliced
  • 2 tablespoons butter
  • 1 tablespoon olive oil
  • 2 large yellow onions, thinly sliced
  • 1 teaspoon salt, divided
  • 1/2 teaspoon black pepper, divided
  • 1 (10.5 ounce) can condensed cream of onion soup (or French onion soup)
  • 1 cup beef broth
  • 1/2 cup heavy cream
  • 1 teaspoon dried thyme
  • 1 cup shredded Gruyère cheese
  • 1/2 cup panko breadcrumbs

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease a 9×13 inch baking dish.
  2. Place the sliced potatoes in a large bowl. Sprinkle with 1/2 teaspoon salt and 1/4 teaspoon pepper. Set aside.
  3. Prepare the caramelized onions: Melt the butter and olive oil in a large skillet over medium heat. Add the sliced onions and cook slowly, stirring occasionally, for 20 to 25 minutes until they are deep golden brown and soft. Stir in the remaining 1/2 teaspoon salt and 1/4 teaspoon pepper during the last 5 minutes of cooking.
  4. In a separate bowl, whisk together the cream of onion soup, beef broth, heavy cream, and dried thyme until smooth.
  5. Layer half of the seasoned potatoes in the prepared baking dish. Pour half of the cream mixture evenly over the potatoes. Top with half of the caramelized onions.
  6. Add the remaining potatoes over the first layer. Pour the rest of the cream mixture over the top, ensuring the potatoes are mostly covered.
  7. Cover the baking dish tightly with aluminum foil. Bake for 45 minutes.
  8. Remove the foil. Sprinkle the top evenly with the shredded Gruyère cheese and the panko breadcrumbs.
  9. Return the dish to the oven, uncovered, and bake for another 15 to 20 minutes, or until the potatoes are tender when pierced with a fork and the topping is golden brown and bubbly.
  10. Let the potato bake rest for 10 minutes before you serve it.

Notes

  • For a crispier topping, you can briefly place the dish under the broiler for the last 1-2 minutes, watching closely to prevent burning.
  • You can prepare the caramelized onions a day ahead of time to save time on the day you bake.
  • If you prefer a richer flavor, substitute the cream of onion soup with one can of condensed French onion soup.

Nutrition

Find it online: https://cookincorner.com/french-onion-potato-bake/