Name: Cheesy French Onion Scalloped Potatoes
Prep time: 35 min
Cook time: 2 h
Total time: 2 h 35 min
Cuisine: French
Ingredients: Unsalted butter (4 tablespoons, divided); Yellow onions (2 large); Russet potatoes (4, about 2 pounds); All-purpose flour (2 tablespoons); Kosher salt (½ teaspoon); Whole milk (1 ½ cups, room temperature); Mild cheddar cheese (¾ cup, shredded, divided); Gruyère cheese (¾ cup, shredded, divided); Salt (to taste); Chopped parsley (for garnish)

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Indulge your senses with the creamy allure of Cheesy French Onion Scalloped Potatoes. As soon as you enter your kitchen and begin to slice the yellow onions, you’ll be greeted by their sweet, savory aroma wafting through the air. The golden hue of caramelized onions mixed with the luscious, bubbly cheese sauce culminates in a dish that visually captivates while promising an explosion of flavors. This dish has a special place in my heart, often reminding me of family gatherings around a cozy dinner table during chilly autumn evenings. Each layer of tender, thinly sliced russet potatoes enveloped in gooey melted cheese and rich onions resonates with warmth and comfort, making it perfect for a hearty winter meal. Get ready to savor every bite of this delightful side dish that can turn any occasion into a celebration.

Table of Contents

Why This Is The Best Cheesy French Onion Scalloped Potatoes Recipe
Ingredients You’ll Need
How to Make Cheesy French Onion Scalloped Potatoes
Tips for Success
Serve It With
How To Store & Reheat Leftovers
Tips & Variations
Recipe FAQs
Cheesy French Onion Scalloped Potatoes

Why This Is The Best Cheesy French Onion Scalloped Potatoes Recipe

What makes this recipe so irresistible is its simplicity blended with remarkable flavor. With just 35 minutes of prep and around 2 hours in the oven, you can create a creamy dream that’ll mesmerize your taste buds. The bubbling cheese intermingled with sweet, caramelized onions forms a delicious harmony that is hard to resist. Aside from its remarkable taste, the visual appeal of golden-brown, cheesy potatoes fresh from the oven can leave anyone drooling. This dish is perfect for everything from a comforting family dinner to impressing guests at a holiday potluck. Plus, with easy modifications, it can be tailored to fit dietary preferences, making it a versatile addition to your recipe collection.

Ingredients You’ll Need

Unsalted butter (4 tablespoons, divided): Essential for creating a rich base and sautéing onions. You can replace it with olive oil, but the flavor won’t be as rich.
Yellow onions (2 large): Thinly sliced to develop a sweet, caramelized flavor, which is a hallmark of French onion dishes. Don’t shy away from using sweet or even red onions for a different spin.
Russet potatoes (4, about 2 pounds): Peeled and sliced into ¼-inch rounds for their creamy texture that holds up well during baking. Yukon Golds are also an excellent alternative, offering a buttery flavor.
All-purpose flour (2 tablespoons): Used to create a roux that thickens the cheese sauce. To keep it gluten-free, use cornstarch or a gluten-free flour blend.
Kosher salt (½ teaspoon): Enhances flavors and balances the richness of the dish.
Whole milk (1 ½ cups, room temperature): Makes the cheese sauce creamy and smooth. You could substitute it with heavy cream for a richer sauce or non-dairy options for lactose sensitivity.
Mild cheddar cheese (¾ cup, shredded, divided): Adds a creamy texture and flavor. Feel free to experiment with sharp cheddar for a bolder taste.
Gruyère cheese (¾ cup, shredded, divided): Imparts a nutty and slightly sweet flavor, creating an indulgent creaminess. Substitute with Emmental or another melting cheese if desired.
Salt (to taste): Adjust based on your preference; keep in mind the saltiness of cheese.
Chopped parsley (for garnish): Adds a touch of color and freshness to the dish when serving.

How to Make Cheesy French Onion Scalloped Potatoes

Caramelize the Onions

In a large skillet over medium-low heat, melt 2 tablespoons of butter. Once hot, add the thinly sliced onions and stir frequently. The goal is to achieve a deep golden-brown color, which should take about 30 to 45 minutes. The longer you allow this process, the sweeter and more flavorful the onions will become. Patience is key here! Once caramelized, set them aside and move on to the next step.

Preheat and Prepare

As the onions are caramelizing, preheat your oven to 400°F (200°C). This step is essential for ensuring that the potatoes bake evenly. Lightly spray an 8×8-inch casserole dish with nonstick cooking spray to prevent sticking and help the edges brown nicely. This attention to detail will elevate the final presentation of your Cheesy French Onion Scalloped Potatoes.

Create the Cheese Sauce

In a medium saucepan over medium heat, melt the remaining 2 tablespoons of butter. Whisk in the flour and kosher salt, cooking while whisking constantly for about 1 minute to form a roux. Slowly whisk in the room temperature milk, ensuring no lumps form. Keep whisking as the mixture thickens and begins to bubble, approximately 5 to 7 minutes. Once you have a smooth, thick sauce, remove it from the heat and stir in ½ cup each of cheddar and Gruyère cheese, reserving the remaining cheese for the topping.

Layer the Potatoes

Arrange all potato slices in an even layer, overlapping them slightly in the prepared casserole dish. This method ensures that every bite is bursting with creamy goodness. Once laid out, carefully pour the luscious cheese sauce evenly over the potatoes. Gently tilt the dish or use a spatula to help the sauce seep into the layers, amplifying the creaminess within.

Add Caramelized Onions and Cheese

Evenly distribute the caramelized onions over the cheesy potato layer, ensuring every bite will be infused with that sweet, savory flavor. Top with the reserved ¼ cup of both cheddar and Gruyère cheese. This will create a deliciously crispy top when baked.

Bake to Perfection

Cover the dish tightly with aluminum foil and bake in the preheated oven for 85 to 90 minutes. You’ll know it’s done when the potatoes are tender, easily pierced with a fork. For the last 10 minutes, remove the foil to allow the top to brown beautifully. For an extra crispiness, broil for 2 to 4 minutes, keeping a close eye to avoid burning. The bubbling edges are a sign of deliciousness!

Let it Rest and Serve

Once baked, allow your Cheesy French Onion Scalloped Potatoes to cool for about 5 to 10 minutes. This resting period helps the dish firm up slightly, making it easier to serve. Sprinkle with salt to taste and garnish with fresh chopped parsley. Your dish is now ready to impress!

Tips for Success

Avoid overcooking the onions: Keep them on medium-low heat and stir frequently; burnt onions can ruin the flavor.
Use room temperature ingredients: Bringing your milk to room temperature prevents clumping when combined with the roux.
Layer potatoes evenly: This ensures they cook uniformly and everyone gets a taste of the cheesy goodness.
Taste test your cheese sauce: Adjust the salt before layering, as cheddar and Gruyère can vary in saltiness.
Make it ahead: Prepare and assemble everything a day in advance, leaving the baking step until just before serving.

Serve It With

These Cheesy French Onion Scalloped Potatoes shine on their own, but why not elevate the experience? Pair them with succulent roasted chicken or a savory beef stew for a hearty meal. They also complement a fresh garden salad wonderfully, balancing the richness of the dish. Consider serving with a glass of Chardonnay or a robust Malbec, enhancing the flavor profile beautifully.

How To Store & Reheat Leftovers

Once you’ve savored your cheesy masterpiece, store any leftovers properly. Allow them to cool to room temperature before transferring to an airtight container. You can keep them in the fridge for up to 4 days. For long-term storage, these scalloped potatoes freeze beautifully for up to 3 months. When you’re ready to enjoy again, reheat in the oven at 350°F (175°C) until heated through, about 20-25 minutes. Microwaving is also an option, but be cautious to avoid making them too dry. Refresh the texture with a splash of milk if needed.

Tips & Variations

Feel free to get creative with your Cheesy French Onion Scalloped Potatoes! Swap in different cheeses like smoked Gouda for a unique twist or add spices like thyme or rosemary for an herby flavor. If you’re looking to lighten the dish, consider using half-and-half instead of whole milk. For a vegetarian variation, include sautéed mushrooms along with the onions for added depth. If you’re feeling adventurous, try layering in some cooked bacon for a smoky addition. These easy changes elevate the classic dish and tailor it to your preferences.

Recipe FAQs

Can I make this recipe gluten-free?
Absolutely! Substitute the all-purpose flour with cornstarch or a gluten-free flour blend. Just make sure to adjust the method slightly by dissolving the starch in a bit of cold milk before adding it to the pan.

Can I use pre-packaged shredded cheese?
Yes, you can use pre-shredded cheese, but for the best flavor and texture, freshly shredded cheese is recommended. Pre-packaged cheese often contains anti-caking agents that can affect the melting quality.

What can I serve with Cheesy French Onion Scalloped Potatoes?
Serve these potatoes alongside roasted meats like chicken or beef, or pair them with a light salad. They can also complement grilled vegetables exceptionally well!

How do I keep them from getting watery?
Make sure to slice your potatoes evenly and consider draining excess liquid if the potatoes are too watery. This helps maintain a thick, creamy texture.

While savoring the depth of flavor packed in these Cheesy French Onion Scalloped Potatoes, you’ll come to appreciate how the layers of potatoes, cheese, and onions come together in a delicious dance of comfort and warmth. Experiment with variations, and don’t hesitate to get creative with serving occasions. Each time you prepare this dish, know that you’ve created an experience meant to be shared and enjoyed. So, gather around the table with your loved ones. Happy cooking!

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