French Onion Potato Bake
If you’re looking for a cozy, comforting dish that feels like a warm hug on a plate, then you’ve come to the right place! This French Onion Potato Bake is not just a recipe; it’s a tradition in my home. The combination of creamy potatoes and sweet, caramelized onions creates a dish that’s perfect for busy weeknights or family gatherings. It always brings smiles to the table and warms the heart, making it one of my go-to favorites.
What makes this French Onion Potato Bake truly special is its simplicity. With just a few wholesome ingredients, you can create something that feels indulgent yet approachable. Whether it’s a casual dinner with friends or a comforting meal for your family, this recipe easily fits the bill!
Why You’ll Love This Recipe
- Easy to Make: With straightforward steps and minimal prep, this bake comes together quickly, making it perfect for any night of the week.
- Family-Friendly: Everyone loves cheese and potatoes! This dish is sure to please even the pickiest eaters in your family.
- Make-Ahead Friendly: You can prepare it ahead of time and pop it in the oven when you’re ready to serve, making meal prep a breeze.
- Deliciously Flavorful: The blend of caramelized onions and creamy cheese creates an irresistible flavor profile that will have everyone asking for seconds.
- Versatile Dish: Perfect as a main course or a side dish, this bake fits seamlessly into any meal.

Ingredients You’ll Need
Let’s talk about the ingredients! This recipe uses simple, wholesome items that are easy to find at your local grocery store. With these ingredients, you’ll be able to whip up a delicious French Onion Potato Bake that everyone will love.
For the Onions
- 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 Garnish
- Fresh thyme sprigs
- Extra Parmesan cheese
- Crispy fried onions (optional, for extra crunch!)
Variations
One of the best things about this French Onion Potato Bake is how flexible it is! Feel free to get creative with these variations:
- Add Some Veggies: Toss in some sautéed mushrooms or spinach for added nutrition and flavor.
- Change Up The Cheese: Experiment with different types of cheese like sharp cheddar or pepper jack for an extra kick.
- Make It Spicy: Add red pepper flakes for some heat if you enjoy spicy food.
- Use Sweet Potatoes: Swap out Yukon Golds for sweet potatoes for a delightful twist on flavor and color.
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 your sliced onions along with salt and pepper. Sauté them slowly until they turn golden brown and caramelized—this step brings out their natural sweetness and depth of flavor. If you’re using sugar, add it here to help speed up the caramelization process!
Step 2: Prepare Your Broth
Once your onions are beautifully caramelized (about 20-30 minutes), stir in the garlic powder, dried thyme, and broth. Let it simmer for another few minutes. This mixture will infuse everything with that classic French onion taste!
Step 3: Layer the Potatoes
In a greased baking dish, start layering half of your potato slices on the bottom. Pour half of your onion mixture over them. Then sprinkle half of your cheeses on top. Repeat these layers until all ingredients are used up.
Step 4: Create The Creamy Sauce
In another bowl, mix together heavy cream or milk with additional salt, black pepper, and fresh thyme leaves. Pour this creamy goodness evenly over your layered potatoes.
Step 5: Bake Until Golden
Cover your baking dish with foil and place it in a preheated oven at 375°F (190°C). Bake for about 45 minutes until potatoes are tender. Remove the foil during the last 15 minutes so that your cheesy topping can become golden and bubbly!
This French Onion Potato Bake is sure to become a staple in your home just like it has in mine. Enjoy every bite!
Pro Tips for Making French Onion Potato Bake
Creating the perfect French Onion Potato Bake is all about maximizing flavor and ensuring the dish turns out just right. Here are some handy tips to help you achieve that delicious, comforting bake!
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Slice onions thinly: Thinly sliced onions cook down more evenly and caramelize beautifully, enhancing their natural sweetness.
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Use a mix of cheeses: Combining Gruyère with another cheese like cheddar or mozzarella can add complexity to the flavor and improve the meltiness of your bake.
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Pre-cook potatoes slightly: Parboiling the potato slices for just a few minutes before assembling can ensure they are tender by the time everything is baked together.
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Don’t skip the thyme: Fresh or dried thyme brings a lovely herbal note that complements the richness of the dish, making every bite more flavorful.
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Let it rest before serving: Allowing the bake to sit for about 10 minutes after taking it out of the oven will help it set up nicely and makes serving easier!
How to Serve French Onion Potato Bake
Serving your French Onion Potato Bake can be as delightful as preparing it! With a little creativity, you can present this dish in a way that makes it even more inviting.
Garnishes
- Fresh thyme sprigs: A couple of sprigs on top not only look beautiful but also enhance the dish’s aroma.
- Extra grated Parmesan cheese: Sprinkling some extra cheese on top right before serving adds an appealing finishing touch and extra flavor.
Side Dishes
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Simple Green Salad: A fresh salad with mixed greens, cherry tomatoes, and a light vinaigrette balances the richness of the bake, providing a refreshing crunch.
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Steamed Broccoli or Green Beans: Lightly steamed vegetables bring a pop of color to your plate and offer a healthy contrast to the creamy potatoes.
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Garlic Bread: Crispy garlic bread complements this dish perfectly, allowing you to scoop up any cheesy goodness left on your plate.
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Roasted Carrots: Sweet roasted carrots add an earthy flavor that pairs beautifully with the savory notes of the potato bake.
With these tips and serving suggestions, your French Onion Potato Bake will not only taste amazing but also look fantastic on your dinner table! Enjoy every comforting bite!

Make Ahead and Storage
This French Onion Potato Bake is not only comforting and delicious but also perfect for meal prep. You can easily make it in advance and store it for busy weeknights or gatherings.
Storing Leftovers
- Allow the bake to cool completely before transferring it to an airtight container.
- Store in the refrigerator for up to 3-4 days.
- Label the container with the date so you know when it was made.
Freezing
- To freeze, let the dish cool completely, then cover tightly with plastic wrap followed by aluminum foil.
- It can be frozen for up to 2-3 months.
- For best results, thaw overnight in the refrigerator before reheating.
Reheating
- Preheat your oven to 350°F (175°C).
- Place the potato bake in an oven-safe dish and cover with foil to prevent drying out.
- Heat for about 20-30 minutes or until warmed through. Add a splash of cream if it seems dry.
FAQs
Have questions? We’ve got you covered!
Can I make French Onion Potato Bake vegan?
Yes! Simply replace the butter with plant-based alternatives, use vegetable broth instead of beef broth, and opt for vegan cheese options.
How do I ensure my French Onion Potato Bake doesn’t become too watery?
To avoid excess moisture, make sure you slice your potatoes evenly and consider parboiling them briefly before layering for more consistent cooking.
Can I use other types of cheese in this French Onion Potato Bake?
Absolutely! Feel free to substitute Gruyère with Swiss, cheddar, or mozzarella based on your taste preferences!
How long does it take to prepare French Onion Potato Bake?
Preparation typically takes about 20 minutes, while baking requires approximately 1 hour until golden and bubbly.
Final Thoughts
I hope this French Onion Potato Bake brings warmth and joy to your dinner table! It’s a dish that combines simple ingredients into something truly special. Whether you’re enjoying this as a comforting weeknight meal or serving it at a gathering, it’s bound to impress. Enjoy making it, and don’t hesitate to share your thoughts or variations! Happy cooking!
French Onion Potato Bake
- Prep Time: 20 minutes
- Cook Time: 60 minutes
- Total Time: 1 hour 20 minutes
- Yield: Serves approximately 8 people 1x
- Category: Main
- Method: Baking
- Cuisine: French
Description
Indulge in the warmth of home with this French Onion Potato Bake, a comforting dish that combines creamy potatoes and sweet, caramelized onions. This recipe is designed for simplicity, making it perfect for busy weeknights or family gatherings. With its rich flavors and cheesy goodness, it’s sure to become a favorite at your table. Whether served as a main course or a side dish, this bake is versatile, satisfying, and easy to prepare. Delight in every bite as you enjoy the blend of textures and tastes that make this casserole truly special.
Ingredients
- 2 large yellow onions
- 4 large Yukon Gold potatoes
- 1 cup shredded Gruyère cheese (or your favorite)
- ½ cup Parmesan cheese
- 1 cup heavy cream or whole milk
- ½ cup beef broth (or vegetable broth)
- 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)
- 1 tablespoon butter (for greasing)
- Fresh thyme sprigs for garnish
- Extra Parmesan cheese for garnish
- Crispy fried onions (optional, for extra crunch)
Instructions
- Sauté the sliced onions in butter and olive oil until caramelized (20-30 minutes). Stir in garlic powder, thyme, and broth.
- Layer half of the potato slices in a greased baking dish, followed by half of the onion mixture and half of the cheeses. Repeat layers.
- Mix cream with salt, pepper, and thyme; pour over layers.
- Cover with foil and bake at 375°F (190°C) for 45 minutes. Remove foil for the last 15 minutes to brown the cheese.
Nutrition
- Serving Size: 1/8 of the bake (approximately 180g)
- Calories: 320
- Sugar: 3g
- Sodium: 450mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 27g
- Fiber: 3g
- Protein: 10g
- Cholesterol: 55mg
