Description
A hearty and flavorful French Onion Potato Bake with tender potatoes, sweet caramelized onions, and a golden cheese topping. Perfect as a main or side dish.
Ingredients
Scale
- 2 pounds Yukon Gold potatoes, peeled and thinly sliced (about 1/8-inch thick)
- 4 large yellow onions, thinly sliced
- 4 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 teaspoon salt, plus more to taste
- 1/2 teaspoon black pepper, plus more to taste
- 2 cloves garlic, minced
- 1 cup beef broth (low sodium)
- 1/2 cup dry white wine (optional)
- 1 teaspoon fresh thyme leaves, or 1/2 teaspoon dried thyme
- 1/4 cup chopped fresh parsley, for garnish (optional)
- 4 ounces Gruyère cheese, shredded
- 2 ounces Parmesan cheese, grated
- A pinch of nutmeg (optional)
Instructions
- 1. Caramelize the onions: Melt butter and olive oil in a large pot over medium-low heat. Add onions and cook, stirring occasionally, for 30-45 minutes until deeply golden brown and sweet. Season with 1 tsp salt and 1/2 tsp pepper during the last 10-15 minutes.
- 2. Deglaze and flavor: Add garlic and cook 1 minute until fragrant. Pour in white wine (if using) and scrape bottom. Simmer until reduced by half. Add beef broth and thyme. Simmer 5 minutes. Taste and adjust seasoning.
- 3. Prepare potatoes: Peel and thinly slice potatoes (about 1/8-inch thick).
- 4. Assemble: Preheat oven to 375°F (190°C). Grease a 9×13 inch baking dish. Layer potatoes, then onion mixture, repeating twice more, ending with potatoes.
- 5. Add liquid and cheese: Pour remaining broth mixture over the top. Press down gently. Toss shredded Gruyère and grated Parmesan, sprinkle evenly over the top. Add a pinch of nutmeg if desired.
- 6. Bake: Cover dish tightly with foil and bake for 45 minutes.
- 7. Brown the top: Remove foil and bake for another 20-30 minutes, until potatoes are fork-tender and cheese is golden brown and bubbly.
- 8. Rest and serve: Let rest for 10 minutes before garnishing with parsley and serving.
Notes
Store cooled leftovers in an airtight container in the refrigerator for up to 3-4 days. Reheat in the oven at 350°F (175°C) covered for 20-30 minutes, removing foil for the last 5-10 minutes.
- Prep Time: 30 minutes
- Cook Time: 1 hour 30 minutes
- Category: Side Dish, Casserole
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: Approx. 350-450 kcal (estimate, varies)
- Sugar: Approx. 8-12g (estimate, varies, primarily from onions)
- Sodium: Approx. 400-600mg (estimate, varies with broth and salt)
- Fat: Approx. 20-25g (estimate, varies)
- Carbohydrates: Approx. 30-40g (estimate, varies)
- Fiber: Approx. 4-6g (estimate, varies)
- Protein: Approx. 12-15g (estimate, varies)