French Onion Baked Potatoes Recipe
Imagine everything you adore about French onion soup—the sweet, deeply caramelized onions, savory beefy undertones, bubbling cheese—tucked inside a perfectly fluffy baked potato. That’s the magic of French Onion Baked Potatoes. Each bite delivers a harmony of silky onions and gooey Gruyère with the earthy comfort of russet potatoes. This French-inspired dish is one of those weekday wonders that manages to feel both luxurious and completely homey, perfect for date nights, dinner parties, or the most indulgent solo dinner. Trust me, once you try French Onion Baked Potatoes, you’ll want them on repeat all year round.

Ingredients You’ll Need
Every item in this recipe plays a starring role. From hearty russet potatoes that hold up to generous stuffing, to Gruyère cheese bringing signature French flair, these simple ingredients work together to create an irresistible blend of flavors and textures.
- 4 large russet potatoes: Their starchy interiors bake up perfectly fluffy, ideal for holding a creamy, savory filling.
- 2 tablespoons olive oil: Used for caramelizing onions; opt for good quality extra virgin olive oil to enhance the flavor.
- 2 large yellow onions, thinly sliced: The backbone of French onion flavor, these transform into sweet, jammy gold during caramelization.
- 2 tablespoons unsalted butter: Adds richness and a classic French touch to the caramelized onions.
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried): Infuses a burst of herby, aromatic brightness that elevates the dish.
- 1/2 teaspoon salt: Brings all the flavors together; adjust to taste as the cheese and broth bring extra savoriness.
- 1/4 teaspoon black pepper: Just enough to give the filling a subtle, balancing warmth.
- 1/2 cup beef broth: Classic for French onion recipes, it deglazes the skillet and deepens the savory notes (swap for veggie broth if preferred).
- 1 cup shredded Gruyère cheese (or Swiss): The melting, tangy cheese blanket that creates that signature French onion finish.
- 1/4 cup sour cream (optional, for serving): Adds a creamy, tangy flourish if you love extra richness.
- Chopped parsley (for garnish): Sprinkled on at the end, it brings a pop of color and freshness that brightens every bite.
How to Make French Onion Baked Potatoes
Step 1: Bake the Potatoes
Preheat your oven to 400°F. Give those russet potatoes a good scrub and pat them dry, then prick each one a few times with a fork (this helps steam escape and prevents any potato explosions). Place them directly on your oven rack and bake for 45 to 60 minutes—just enough time for the skins to crisp up and the insides to become beautifully tender.
Step 2: Caramelize the Onions
While the potatoes bake, let’s build that irresistible French onion filling. Heat the olive oil and butter together in a large skillet over medium-low. Add your thinly sliced onions, thyme, salt, and pepper. Patiently cook, stirring every now and then, for 25 to 30 minutes. The onions will slowly melt down to golden brown and become deeply sweet and savory—the essence of French Onion Baked Potatoes. Don’t rush this step; the flavor payoff is worth every minute.
Step 3: Deglaze and Enrich
Once your onions are deeply caramelized, pour in the beef broth. Use a wooden spoon to scrape up any browned goodness from the bottom of the pan. Let it cook for another 2 or 3 minutes, stirring until most of the broth is absorbed and you’ve got a luscious onion jam.
Step 4: Stuff the Potatoes
When your potatoes are baked and just cool enough to handle, place them on a baking sheet. Cut a lengthwise slit down each one, then gently squeeze the ends to open them up and fluff the potato flesh with a fork. Now, fill each potato generously with the caramelized onion mixture—making sure to let all that sweet-savory flavor seep into every nook.
Step 5: Add Cheese and Bake
Top each filled potato with a hearty handful of shredded Gruyère. Slide the baking sheet back into the oven for 5 to 7 minutes. Keep a close eye as the cheese melts, bubbles, and turns ever-so-slightly golden. That’s your signal that your French Onion Baked Potatoes are ready to make their grand entrance!
Step 6: Garnish and Serve
Take those bubbly beauties out of the oven and finish with a sprinkle of fresh chopped parsley. Want extra decadence? Add a dollop of sour cream right on top for a rich, tangy contrast. Serve hot for maximum swooning.
How to Serve French Onion Baked Potatoes

Garnishes
Simple isn’t boring—especially with the right finishing touches. A flourish of freshly chopped parsley instantly brightens up each serving, and a spoonful of cool sour cream adds creamy contrast to the warm, cheesy filling. If you want something extra special, try sprinkling on a few crispy fried onions or even a dusting of smoked paprika for color and subtle warmth.
Side Dishes
French Onion Baked Potatoes are hearty enough to be the star of your meal. For a balanced dinner, pair them with a crisp green salad tossed in a zippy vinaigrette or some garlicky roasted green beans. For more comfort, serve alongside a bowl of soup or a warm baguette to soak up any runaway cheese and onion.
Creative Ways to Present
Take your presentation up a notch by serving these potatoes on individual plates or in mini cast iron skillets. For family gatherings, line them up family-style on a platter with a rainbow of fresh herbs scattered over the top. You can even halve the potatoes and serve as appetizers for a party—the French Onion Baked Potatoes filling is just as showstopping in mini form.
Make Ahead and Storage
Storing Leftovers
Got leftovers? Wrap your cooled French Onion Baked Potatoes tightly in foil or store in an airtight container. They’ll keep beautifully in the fridge for up to three days, ready to make your lunch or a quick supper extra special.
Freezing
You can freeze fully assembled (and cooled) French Onion Baked Potatoes if you like to meal prep. Wrap each potato well in plastic wrap and then in foil. Freeze for up to one month. When ready to enjoy, thaw in the refrigerator overnight for even reheating.
Reheating
To revive that just-baked magic, reheat your French Onion Baked Potatoes in a 350°F oven, unwrapped and on a baking sheet, for about 20 minutes or until hot all the way through. If you’re in a pinch, a few minutes in the microwave will do—just note the skin won’t be quite as crisp.
FAQs
Can I make French Onion Baked Potatoes vegetarian?
Absolutely! Simply swap the beef broth for a rich vegetable broth, and you’ll have all that classic French onion flavor in a totally vegetarian-friendly package. Everything else remains unchanged.
What’s the best cheese to use if I don’t have Gruyère?
Gruyère is traditional for its nutty flavor and meltability, but Swiss, Emmental, or even mozzarella work in a pinch. Just pick something that melts well and has a bit of tang to stand up to the sweet onions.
How do I get my onions to caramelize properly?
Patience is key! Low and slow is the golden rule. Stir occasionally and don’t rush the process—it can take up to 30 minutes, but the result is sweet, mellow, and loaded with flavor.
Can I prepare the onions ahead of time?
Absolutely. The caramelized onion filling can be made up to three days in advance and stored in the fridge. Just reheat gently before stuffing your potatoes for dinner in a flash.
Is it possible to use sweet potatoes instead of russets?
Yes! Sweet potatoes work deliciously well here, lending extra earthiness and a touch of sweetness—just watch the baking time, as they might cook a bit faster than russets.
Final Thoughts
If you love layers of bold, cozy flavor, French Onion Baked Potatoes are about to become your new comfort food obsession. They’re easy enough for weeknights, impressive enough for guests, and always a hit. I can’t wait for you to try them—your kitchen will smell amazing and your taste buds will thank you!
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French Onion Baked Potatoes Recipe
- Total Time: 1 hour 25 minutes
- Yield: 4 servings 1x
- Diet: Non-Vegetarian
Description
These French Onion Baked Potatoes are a delightful twist on a classic comfort food. Tender baked potatoes are filled with savory caramelized onions, topped with gooey Gruyère cheese, and baked until golden and bubbly. A perfect side dish or main course for any occasion.
Ingredients
Potatoes:
- 4 large russet potatoes
- 2 tablespoons olive oil
Caramelized Onions:
- 2 large yellow onions, thinly sliced
- 2 tablespoons unsalted butter
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/2 cup beef broth
- 1 cup shredded Gruyère cheese (or Swiss)
- 1/4 cup sour cream (optional, for serving)
- Chopped parsley (for garnish)
Instructions
- Preheat oven: Preheat oven to 400°F.
- Bake Potatoes: Scrub and dry the potatoes, prick with a fork, and bake for 45–60 minutes until tender.
- Caramelize Onions: Cook onions, thyme, salt, and pepper in olive oil and butter until caramelized. Deglaze with beef broth.
- Prepare Potatoes: Cut a slit in each potato, fluff the insides, fill with onions, top with cheese.
- Bake: Bake filled potatoes for 5–7 minutes until cheese is melted.
- Garnish: Garnish with parsley and sour cream if desired.
Notes
- For a vegetarian version, use vegetable broth instead of beef broth.
- Swiss or mozzarella can be substituted for Gruyère.
- Caramelizing onions slowly is key to flavor development.
- Prep Time: 15 minutes
- Cook Time: 1 hour 10 minutes
- Category: Main Course
- Method: Baking
- Cuisine: French-Inspired
Nutrition
- Serving Size: 1 stuffed potato
- Calories: 410
- Sugar: 6 g
- Sodium: 460 mg
- Fat: 20 g
- Saturated Fat: 10 g
- Unsaturated Fat: 8 g
- Trans Fat: 0 g
- Carbohydrates: 48 g
- Fiber: 4 g
- Protein: 12 g
- Cholesterol: 35 mg