Description
A rich and creamy dish that combines the flavors of French onion soup with hearty potatoes, perfect for family dinners.
Ingredients
- 2 large yellow onions, thinly sliced
- 2 tablespoons butter
- 1 tablespoon olive oil
- 1 teaspoon salt
- ½ teaspoon black pepper
- 1 teaspoon sugar (optional)
- ½ teaspoon garlic powder
- ½ teaspoon dried thyme (or 1 teaspoon fresh thyme)
- ½ cup beef broth (or vegetable broth for vegetarian version)
- 4 large Yukon Gold potatoes, sliced ¼-inch thick
- 1 tablespoon butter (for greasing)
- 1 cup shredded Gruyère cheese (or Swiss, cheddar, or mozzarella)
- ½ cup Parmesan cheese, grated
- 1 cup heavy cream or whole milk
- ½ teaspoon salt
- ¼ teaspoon black pepper
- 1 teaspoon fresh thyme leaves
- Fresh thyme sprigs (for garnish)
- Extra Parmesan cheese (for garnish)
- Crispy fried onions (optional, for garnish)
Instructions
- In a large skillet, melt 2 tablespoons of butter and 1 tablespoon of olive oil over medium heat. Add the sliced onions, 1 teaspoon salt, ½ teaspoon black pepper, and 1 teaspoon sugar (if using). Cook for about 15-20 minutes until the onions are soft and golden brown. Stir in garlic powder and thyme, then pour in ½ cup of beef or vegetable broth. Cook for another 2-3 minutes, then remove from heat.
- Preheat your oven to 375°F (190°C). Slice the potatoes into ¼-inch thick rounds.
- Grease a baking dish with 1 tablespoon of butter. Layer half of the potato slices at the bottom of the dish. Spread half of the caramelized onion mixture over the potatoes. Sprinkle half of the Gruyère and Parmesan cheese over the onions. Repeat the layers with the remaining potatoes, onions, and cheese.
- In a bowl, whisk together 1 cup of heavy cream, ½ teaspoon salt, ¼ teaspoon black pepper, and 1 teaspoon fresh thyme leaves. Pour the cream mixture evenly over the layered potatoes. Cover with foil and bake for 45 minutes. Remove the foil and bake for an additional 15-20 minutes until the top is golden and bubbly.
- Let the dish cool for a few minutes. Garnish with fresh thyme sprigs and extra Parmesan cheese. Serve warm.
Notes
For extra flavor, consider adding sautéed mushrooms alongside the onions. Customize the cheese to your preference.
- Prep Time: 20 minutes
- Cook Time: 60 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: French