French Onion Potato Bake
If you’re looking for a cozy, comforting dish that’s perfect for busy weeknights or family gatherings, you’ve come to the right place! This French Onion Potato Bake is one of those recipes that feels like a warm hug on a chilly evening. The combination of creamy potatoes and sweet, caramelized onions creates a symphony of flavors that will have everyone coming back for seconds. It’s not just delicious; it’s also easy to whip up, making it an ideal choice for meal prep or a quick dinner after a long day.
What I love most about this recipe is its versatility. Whether you’re serving it as a side dish or making it the star of your dinner table, this bake fits right in. Plus, it’s always a hit with both kids and adults alike!
Why You’ll Love This Recipe
- Simple preparation: With just a handful of ingredients, this recipe is straightforward and easy to follow.
- Family-friendly: Everyone in the family will love the rich flavors and creamy texture—perfect for picky eaters!
- Make-ahead convenience: You can prepare this dish in advance and pop it in the oven when you need it.
- Comfort food at its best: The blend of cheese and creamy potatoes will warm your heart and satisfy your taste buds.
- Customizable options: Feel free to mix things up with different cheeses or herbs based on what you have on hand.

Ingredients You’ll Need
This French Onion Potato Bake uses simple, wholesome ingredients that you probably already have in your kitchen. Here’s what you’ll need to create this delicious dish:
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 Potato Layer
- 4 large Yukon Gold potatoes, sliced ¼-inch thick
- 1 tablespoon butter (for greasing)
For the Cheesy Cream 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 parts about this French Onion Potato Bake is how flexible it can be. You can easily make it your own with these fun variations:
- Swap the cheese: Use any cheese you love! Cheddar adds a sharp flavor while mozzarella makes it extra gooey.
- Add veggies: Throw in some sautéed mushrooms or spinach for added nutrition and flavor.
- Make it spicy: Sprinkle in some red pepper flakes or add jalapeños if you’re craving some heat.
- Herb swap: Experiment with different herbs like rosemary or oregano to change up the flavor profile.
How to Make French Onion Potato Bake
Step 1: Sauté the Onions
Start by melting the butter and olive oil in a large skillet over medium heat. Add your sliced onions along with salt, pepper, and sugar if you’re using it. Sauté them slowly until they turn golden brown and caramelized. This step is essential because caramelizing brings out the natural sweetness of the onions, adding depth to your bake.
Step 2: Prepare Your Broth
Once your onions are beautifully caramelized (about 20-25 minutes), stir in garlic powder, thyme, and broth. Allow this mixture to simmer gently for about five minutes. This step enhances the flavor even more by allowing all those delicious notes to meld 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 of the dish. Pour half of the onion mixture over them followed by half of each cheese type. Repeat these layers until you’ve used all ingredients.
Step 4: Create the Creamy Sauce
In a bowl, whisk together heavy cream (or milk), salt, black pepper, and fresh thyme leaves. Pour this creamy goodness evenly over your layered potatoes and onions. This step is crucial as it ensures every bite is rich and flavorful!
Step 5: Bake to Perfection
Cover your baking dish with foil and bake for about 45 minutes. Then remove the foil, sprinkle extra Parmesan on top if desired, and bake for another 15-20 minutes until bubbly and golden brown on top. Letting it bake uncovered at this stage creates that delightful crust we all love!
I can’t wait for you to try this French Onion Potato Bake! It’s sure to become a favorite around your dinner table just like it has at mine. Enjoy every cheesy bite!
Pro Tips for Making French Onion Potato Bake
Making French Onion Potato Bake is a delightful experience, and with these pro tips, you’ll ensure it turns out perfect every time!
- Slice onions evenly: Uniform slices allow the onions to cook at the same rate, ensuring sweet, caramelized goodness throughout your dish.
- Low and slow for caramelization: Cook your onions on low heat for a longer period. This method brings out their natural sweetness and depth of flavor without burning them.
- Layer potatoes carefully: Arrange your potato slices in a single layer, slightly overlapping. This helps them cook evenly and absorb all that delicious onion flavor.
- Use high-quality cheese: The right cheese can elevate this dish. Gruyère melts beautifully and has a rich flavor that complements the creamy potatoes perfectly.
- Let it rest before serving: Allowing the bake to sit for about 10 minutes after removing it from the oven lets the flavors meld together and makes it easier to serve.
How to Serve French Onion Potato Bake
This dish makes a stunning centerpiece at the dinner table! With its golden, bubbly top and rich aroma, it’s bound to impress your family and friends.
Garnishes
- Fresh thyme sprigs: A few sprigs on top not only look beautiful but also add a fresh herbal note to your dish.
- Extra Parmesan cheese: A light sprinkle just before serving enhances the cheesy flavor and adds a lovely finishing touch.
Side Dishes
- Mixed Green Salad: A refreshing salad with a light vinaigrette balances the richness of the potato bake. Try including arugula or spinach for an added peppery kick.
- Roasted Vegetables: Seasonal veggies like carrots, Brussels sprouts, or zucchini tossed in olive oil and herbs make a colorful addition to your meal while providing some crunch.
- Garlic Bread: Warm, crusty garlic bread is perfect for soaking up the creamy sauce from the bake. Plus, who can resist its buttery aroma?
- Steamed Broccoli: This simple side offers a pop of green color and pairs wonderfully with the savory flavors of the potato bake.
With these serving suggestions and tips in mind, you’re all set to create a meal that’s not only comforting but also memorable! Enjoy every bite of your delicious French Onion Potato Bake!

Make Ahead and Storage
This French Onion Potato Bake is perfect for meal prep, allowing you to enjoy a comforting dish throughout the week. You can prepare it in advance and store it for quick dinners or lunches!
Storing Leftovers
- Allow the dish to cool completely before storing.
- Transfer leftovers to an airtight container.
- Store in the refrigerator for up to 3 days.
Freezing
- Cool the bake completely before freezing.
- Wrap tightly with plastic wrap or aluminum foil, or place in a freezer-safe container.
- It can be frozen for up to 2 months.
Reheating
- Thaw overnight in the refrigerator if frozen.
- Preheat your oven to 350°F (175°C).
- Cover with foil and reheat for about 20-25 minutes, or until heated through.
FAQs
If you have questions about making this delightful dish, you’re in the right place!
Can I make this French Onion Potato Bake without cheese?
Absolutely! You can omit the cheese or use a dairy-free alternative if you prefer. The bake will still be delicious!
How do I ensure my French Onion Potato Bake is creamy?
To keep your bake creamy, make sure to use heavy cream or whole milk as specified in the recipe. This adds richness and depth of flavor.
Can I customize the herbs in this French Onion Potato Bake?
Definitely! Feel free to experiment with different herbs like rosemary or oregano, depending on your taste preferences.
How long does it take to prepare the French Onion Potato Bake?
The total preparation time is about 15 minutes, followed by an hour of baking. It’s an easy recipe that fits into any busy schedule!
Final Thoughts
I hope you enjoy making this French Onion Potato Bake as much as I do! It’s a cozy, comforting dish that brings warmth to any table. Don’t hesitate to get creative with your ingredients and make it your own. Happy cooking, and I can’t wait for you to dive into this deliciousness!
French Onion Potato Bake
Indulge in the warm, comforting flavors of this French Onion Potato Bake, perfect for busy weeknights or family gatherings. This dish combines creamy, tender Yukon Gold potatoes and sweet caramelized onions, all enveloped in a luscious cheese sauce that will have everyone clamoring for seconds. It’s not only delicious but also simple to prepare, making it a go-to option for meal prep or a quick dinner after a long day. Versatile enough to be served as a side dish or the star of your table, this hearty bake is sure to please both kids and adults alike.
- Prep Time: 15 minutes
- Cook Time: 60 minutes
- Total Time: 1 hour 15 minutes
- Yield: Serves 6
- Category: Main
- Method: Baking
- Cuisine: French
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 a vegetarian version)
- 4 large Yukon Gold potatoes, sliced ¼-inch thick
- 1 tablespoon butter (for greasing)
- 1 cup shredded Gruyère cheese (or cheddar, 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
- Sauté sliced onions in butter and olive oil until caramelized.
- Stir in garlic powder, thyme, and broth; simmer for 5 minutes.
- Preheat oven to 375°F (190°C) and grease a baking dish with butter.
- Layer half of the potato slices, followed by half of the onion mixture and half of each cheese type; repeat layers.
- Whisk together heavy cream, salt, black pepper, and thyme; pour over layered ingredients.
- Cover with foil and bake for 45 minutes; uncover, sprinkle with extra Parmesan if desired, and bake for another 15-20 minutes until golden brown.
Nutrition
- Serving Size: 1 serving
- Calories: 360
- Sugar: 3g
- Sodium: 450mg
- Fat: 22g
- Saturated Fat: 13g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 3g
- Protein: 9g
- Cholesterol: 55mg
