French Onion Potato Bake
If you’re looking for a dish that combines comfort and flavor, then you’re in the right place! This French Onion Potato Bake has become one of my go-to recipes for busy weeknights and family gatherings alike. It’s rich, cheesy, and oh-so-satisfying, making it a perfect choice for any occasion. Whether you’re feeding a crowd or just treating yourself to a cozy dinner at home, this dish is sure to warm your heart and fill your belly.
What makes this French Onion Potato Bake special is its simplicity. With just a handful of wholesome ingredients, you can create something truly delicious. Plus, it’s an excellent way to elevate those humble potatoes into a standout meal that everyone will love!
Why You’ll Love This Recipe
- Easy to make: With straightforward steps, you’ll have this dish ready in no time.
- Family-friendly: Kids and adults alike will enjoy the cheesy goodness!
- Make-ahead friendly: Prepare it in advance for an easy weeknight meal.
- Deliciously comforting: The combo of caramelized onions and creamy potatoes is simply irresistible.

Ingredients You’ll Need
Let’s gather some simple, wholesome ingredients for our French Onion Potato Bake. Each one plays an important role in bringing out the flavors. Here’s what you’ll need:
For the Onion Mixture
- 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 a vegetarian version)
For the Potatoes
- 4 large Yukon Gold potatoes, sliced ¼-inch thick
- 1 tablespoon butter (for greasing)
For the Cheese Sauce
- 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
For Topping
- Fresh thyme sprigs
- Extra Parmesan cheese
- Crispy fried onions (optional, for extra crunch!)
Variations
One of the best things about this recipe is how flexible it can be! Feel free to get creative and try these variations:
- Add some protein: Layer in cooked chicken or sautéed mushrooms for added heartiness.
- Change up the cheese: Experiment with different cheeses like cheddar or pepper jack for a twist.
- Throw in veggies: Add spinach or roasted red peppers for extra color and nutrition.
- Make it spicy: Sprinkle in some red pepper flakes for a little kick.
How to Make French Onion Potato Bake
Step 1: Sauté the Onions
Start by heating the butter and olive oil in a large skillet over medium heat. Add in your sliced onions along with salt and pepper. Sauté them slowly until they turn golden brown and caramelized—this brings out their natural sweetness and adds depth to your bake.
Step 2: Prepare the Broth Mixture
Once your onions are beautifully caramelized, stir in the garlic powder, dried thyme, and broth. Let this simmer gently for about 5 minutes to combine all those delicious flavors together.
Step 3: Assemble Your Bake
Preheat your oven to 375°F (190°C). Grease a baking dish with butter. Layer half of your potato slices at the bottom, then pour half of your onion mixture over them. Repeat with the remaining potatoes and onions.
Step 4: Make the Cheese Sauce
In a bowl, mix together the Gruyère cheese, Parmesan cheese, heavy cream (or milk), salt, black pepper, and fresh thyme leaves. Pour this luscious cheese sauce over your layered potatoes.
Step 5: Bake It Up!
Cover your baking dish with foil and pop it into the oven. Bake for about 45 minutes until the potatoes are tender. Remove the foil during the last 10 minutes of baking to let that cheesy top get beautifully golden brown.
Step 6: Serve & Enjoy!
Once out of the oven, let it cool slightly before serving. Top with fresh thyme sprigs and crispy fried onions if using—these add such a fun crunch! Enjoy every bite of this comforting French Onion Potato Bake; I know you’ll love it as much as I do!
Pro Tips for Making French Onion Potato Bake
Making a delicious French Onion Potato Bake is all about infusing layers of flavor and ensuring that your dish comes out perfectly every time. Here are some pro tips to elevate your cooking experience!
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Slice onions thinly: This allows for even caramelization, giving you that rich, sweet flavor. Thinner slices cook down more quickly and evenly, resulting in a smoother texture.
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Use low heat for onions: Cooking the onions on low heat helps them caramelize slowly without burning. This enhances their natural sweetness and adds depth to your dish.
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Layer your ingredients thoughtfully: Arrange the potatoes and onion mixture in even layers. This not only aids in cooking but also ensures that every bite is a delightful combination of flavors.
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Let it rest after baking: Allowing the potato bake to sit for about 10-15 minutes after removing it from the oven helps the flavors meld together and makes it easier to slice.
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Experiment with cheeses: While Gruyère adds a wonderful flavor, feel free to mix in other cheeses like cheddar or mozzarella for a unique twist. Each type brings its own character to the dish!
How to Serve French Onion Potato Bake
Serving your French Onion Potato Bake can be just as delightful as making it! The golden crust and creamy layers make for an impressive presentation. Here are some ideas to elevate your serving style.
Garnishes
- Fresh thyme sprigs: A few sprigs of fresh thyme on top provide a beautiful visual appeal and enhance the herbaceous notes of the dish.
- Extra Parmesan cheese: Sprinkling additional grated Parmesan just before serving can add an extra layer of richness and flavor.
- Crispy fried onions: Adding these on top gives a delightful crunch that contrasts beautifully with the creamy potatoes.
Side Dishes
- Simple green salad: A light salad with mixed greens, cherry tomatoes, and a tangy vinaigrette complements the rich flavors of the bake while adding freshness.
- Roasted vegetables: Seasonal roasted veggies such as carrots, Brussels sprouts, or asparagus can offer a colorful contrast and enhance the meal’s nutritional value.
- Garlic bread: Warm, crispy garlic bread serves as a perfect vessel for scooping up any leftover cheesy goodness from your plate!
- Steamed broccoli or green beans: These vibrant green veggies add both color and nutrition to your dinner table while balancing out the richness of the potato bake.
This French Onion Potato Bake is not just food; it’s comfort served in a dish! Enjoy sharing this delightful creation with family and friends—it’s sure to become a new favorite at your dinner table!

Make Ahead and Storage
This French Onion Potato Bake is perfect for meal prep! You can prepare it in advance and enjoy the deliciousness throughout the week. Here’s how to store and reheat it for maximum flavor.
Storing Leftovers
- Allow the baked potatoes to cool completely at room temperature.
- Transfer leftovers to an airtight container.
- Store in the refrigerator for up to 4 days.
Freezing
- Wrap individual portions tightly in plastic wrap or aluminum foil.
- Place wrapped portions in a freezer-safe bag or container.
- Freeze for up to 3 months for optimal flavor.
Reheating
- Preheat your oven to 350°F (175°C).
- Remove from the refrigerator or freezer and let sit at room temperature for about 15 minutes.
- Cover with foil and bake until heated through, approximately 20-30 minutes for refrigerated leftovers, and a bit longer if frozen.
FAQs
If you have questions about this recipe, you’re not alone! Here are some common inquiries:
Can I make French Onion Potato Bake vegetarian?
Absolutely! Simply substitute beef broth with vegetable broth, and you’ll have a delicious vegetarian version that everyone will love.
What type of cheese works best for French Onion Potato Bake?
While Gruyère is traditional, feel free to use Swiss, cheddar, or mozzarella. Each brings its own unique flavor to this comforting dish!
How can I make French Onion Potato Bake healthier?
You can reduce the amount of cheese used or opt for lower-fat dairy options like light cream or milk. Adding more vegetables can also enhance nutrition without sacrificing taste!
Can I add other ingredients to my French Onion Potato Bake?
Definitely! Feel free to mix in sautéed mushrooms, spinach, or even cooked chicken for added protein and flavor.
How long does French Onion Potato Bake last in the fridge?
When stored properly in an airtight container, it will last about 4 days in the refrigerator. Enjoy it as a hearty meal anytime!
Final Thoughts
I hope you find joy in making this French Onion Potato Bake! It’s a wonderful blend of flavors that warms the heart and satisfies the soul. Whether it’s a cozy family dinner or meal prep for busy days ahead, I’m sure you’ll love every bite. Happy cooking, and don’t forget to share your delicious results!
French Onion Potato Bake
Indulge in the rich, creamy goodness of this French Onion Potato Bake, a dish that combines the comforting flavors of caramelized onions and cheesy potatoes into one irresistible casserole. Perfect for busy weeknights or family gatherings, this recipe is easy to prepare and sure to warm your heart. With layers of tender Yukon Gold potatoes baked in a flavorful onion mixture and topped with a luscious cheese sauce, it’s an ultimate comfort food that everyone will love. Plus, it’s customizable with your favorite cheeses and add-ins, making it versatile enough for any occasion.
- Prep Time: 20 minutes
- Cook Time: 55 minutes
- Total Time: 1 hour 15 minutes
- Yield: Serves 6
- Category: Main
- Method: Baking
- Cuisine: French
Ingredients
- 2 large yellow onions
- 4 large Yukon Gold potatoes
- 1 cup shredded Gruyère cheese (or Swiss/cheddar)
- ½ cup grated Parmesan cheese
- 1 cup heavy cream (or whole milk)
- ½ cup beef broth (or vegetable broth for a vegetarian version)
- 2 tablespoons butter
- 1 tablespoon olive oil
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon garlic powder
- ½ teaspoon dried thyme (or 1 teaspoon fresh thyme)
- Fresh thyme sprigs for topping
- Extra Parmesan cheese for topping
- Crispy fried onions (optional, for extra crunch)
Instructions
- Sauté sliced onions in butter and olive oil until golden brown. Add garlic powder, thyme, and broth; simmer for 5 minutes.
- Preheat oven to 375°F (190°C). Layer half of the potato slices and onion mixture in a greased baking dish; repeat layers.
- Combine cheeses, cream, salt, pepper, and thyme in a bowl; pour over layered potatoes.
- Cover with foil and bake for 45 minutes. Remove foil during the last 10 minutes to brown the top.
- Let cool slightly before serving; garnish with fresh thyme sprigs and optional crispy fried onions.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 392
- Sugar: 3g
- Sodium: 600mg
- Fat: 24g
- Saturated Fat: 14g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 3g
- Protein: 12g
- Cholesterol: 78mg
