Cheesy Potato Casserole with Crispy Fried Onions: The Ultimate Comfort Food Recipe

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If there’s one dish that brings people together, it’s a cheesy potato casserole with crispy fried onions. Whether you’re preparing for a holiday meal, hosting a family dinner, or simply indulging in a comforting treat, this casserole checks all the boxes. The rich creaminess of melted cheddar cheese combined with the crispy, golden fried onions on top creates a mouthwatering harmony that you and your guests will savor.

This recipe isn’t just about food; it’s about creating memories, comfort, and warmth with every bite. Let’s dive in and explore how to make this indulgent yet simple dish that’s perfect for any occasion.

The Essential Ingredients for Cheesy Potato Casserole with Crispy Fried Onions

Before we start cooking, let’s take a moment to gather all the essential ingredients you’ll need. These items will combine to create the casserole’s unforgettable taste and texture.

For the Potatoes

• 32 ounces frozen cubed hash browns (thawed): You want your hash browns to be thawed so that you avoid excess moisture in your casserole, which can cause it to become soggy.
• ¼ cup (57 g) unsalted butter (melted): The butter brings richness and flavor to the potatoes, making them creamy.
• 2 cups (226 g) shredded sharp cheddar cheese: The sharp cheddar is key for delivering that bold, cheesy flavor.
• 1 ½ cups (345 g) sour cream: The sour cream adds a smooth texture and tang that balances the richness of the cheese and butter. Indulge in gourmet dining at home with our Baked Spinach Mushroom Quesadillas

For the Sauce

• ¼ cup (57 g) unsalted butter: Used to sauté the onions and form the base of the sauce.
• 1 small yellow onion, diced: This adds a savory depth of flavor to the sauce, enhancing the overall taste.
• 2 teaspoons minced garlic: Garlic brings in an aromatic punch to the sauce.
• ¼ cup (31 g) all-purpose flour: This thickens the sauce and provides the creamy texture.
• 1 teaspoon kosher salt: Enhances the natural flavors of the casserole.
• ½ teaspoon black pepper: Adds a mild heat and warmth to the dish.
• ½ teaspoon cayenne pepper: This introduces a slight kick, adding complexity to the sauce.
• ½ teaspoon dried mustard: Adds a touch of tangy heat that complements the cheese.
• ½ cup (120 g) chicken broth (room temperature): Provides a savory base for the sauce.
• ½ cup (122.5 g) whole milk (room temperature): Ensures a smooth, creamy sauce.

For the Fried Onions

• 2 large yellow onions, thinly sliced: These create the crispy topping for the casserole, adding texture and flavor contrast.
• 4 cups vegetable oil: Used for frying the onions, ensuring they turn golden and crispy.
• ½ teaspoon kosher salt: To season the onions after frying.

Step-by-Step Instructions to Prepare the Perfect Cheesy Potato Casserole with Crispy Fried Onions

Now that we have everything we need, let’s walk through the steps for creating this dish. Each stage is simple but contributes to building layers of flavor and texture.

Step 1: Preheat the Oven and Prepare the Baking Dish

Start by preheating your oven to 350°F (175°C). While the oven heats up, take a 9×13-inch baking dish and grease it lightly with non-stick spray. This ensures your casserole won’t stick to the dish and will make for easy serving once it’s baked.

Pro Tip: Grease the baking dish well to ensure that the casserole comes out smoothly after baking.

Step 2: Prepare the Potato Mixture

In a large mixing bowl, combine the thawed hash browns, melted butter, shredded cheddar cheese, and sour cream. Stir everything together thoroughly. The melted butter will coat the hash browns, making them creamy, while the cheddar and sour cream add the rich, cheesy flavor that makes this casserole so irresistible.

Pro Tip: Make sure the hash browns are fully thawed before mixing. Excess moisture can make the casserole watery, so be sure to press out any extra liquid from the potatoes before mixing.

Step 3: Make the Savory Sauce

In a medium skillet, melt unsalted butter over medium heat. Once the butter has melted, add the diced yellow onion and sauté it for 3-5 minutes, or until the onion becomes soft and translucent. Add minced garlic and cook for another minute to release its aroma.

Next, stir in the all-purpose flour, kosher salt, black pepper, cayenne pepper, and dried mustard. Allow the mixture to cook for about 1 minute, forming a roux. This step is essential for thickening the sauce and adding flavor.

Gradually whisk in the chicken broth and whole milk, making sure to stir constantly to avoid any lumps. Continue to cook until the sauce thickens and becomes smooth.

Pro Tip: Stirring the sauce continuously helps prevent lumps, ensuring a silky texture.

Step 4: Combine the Sauce with the Potatoes

Once the sauce has thickened, pour it over the potato mixture in the large bowl. Stir everything together until the sauce is fully incorporated with the potatoes, cheese, and sour cream. This creates a creamy, cheesy base for the casserole.

Step 5: Bake the Casserole

Transfer the potato mixture into the greased baking dish and spread it out evenly. Bake in the preheated oven for 45-50 minutes, or until the casserole is bubbly and golden brown on top. The cheese will melt and form a deliciously cheesy crust, while the potatoes cook through.

Pro Tip: If you find that the casserole is browning too quickly, you can cover it with aluminum foil halfway through baking to ensure it doesn’t over-brown.

Step 6: Fry the Crispy Onions

While the casserole is baking, it’s time to prepare the crispy onions. In a large saucepan, heat the vegetable oil to 350°F (175°C). Thinly slice the yellow onions and separate them into individual rings. Fry the onions in batches—about 1 cup at a time—stirring occasionally. Fry the onions for 2-5 minutes, or until they are light golden brown and crispy.

Use a slotted spoon or strainer to remove the onions from the oil and place them on a paper towel-lined baking sheet to drain excess oil. Immediately sprinkle with kosher salt while they’re still hot.

Pro Tip: For extra crispy onions, fry them in two batches. This prevents overcrowding and ensures each ring becomes perfectly crispy.

Step 7: Assemble and Serve

Once the casserole is baked, remove it from the oven and let it cool for a few minutes. Then, evenly sprinkle the fried onions on top of the casserole. This adds a satisfying crunch and a burst of flavor to every bite.

Serve the casserole immediately while it’s hot and enjoy the perfect combination of creamy potatoes and crispy fried onions. Pair it with a simple salad or your favorite side dishes to make the meal complete.

Why You’ll Love This Cheesy Potato Casserole with Crispy Fried Onions

Rich Flavor with Every Bite

The richness of melted sharp cheddar cheese combined with the tanginess of sour cream creates a harmonious flavor that’s both indulgent and comforting. The crispy fried onions elevate the dish to another level, giving it the perfect contrast in texture.

Versatile for Any Occasion

This casserole is incredibly versatile. Whether you’re serving it at a holiday dinner, a family gathering, or even a casual weekend meal, it’s guaranteed to be a hit. Its comforting flavors make it suitable for both special occasions and regular weeknight meals.

Easy to Make and Make Ahead

One of the best parts of this recipe is how easy it is to prepare. With minimal prep time and simple ingredients, it comes together effortlessly. You can even make it ahead of time, saving you valuable time when hosting or meal prepping.

Tips for Perfecting Your Cheesy Potato Casserole

• Use Freshly Shredded Cheese: For the best melt and flavor, always opt for freshly shredded cheese over pre-shredded options. The pre-shredded varieties often contain anti-caking agents that can affect the texture.
• Prevent Soggy Potatoes: Ensure the hash browns are well-thawed and free of excess moisture. Press out any liquid to avoid a watery casserole.
• Customize the Toppings: If you’re feeling adventurous, you can customize the casserole’s toppings. Try adding breadcrumbs, herbs, or even crumbled bacon for added flavor and texture.

Frequently Asked Questions (FAQ)

Q1: Can I use fresh potatoes instead of frozen hash browns?
Yes, you can use fresh potatoes. Simply peel, grate, and thaw them before using in the recipe.

Q2: Can I make this casserole ahead of time?
Yes, you can prepare the casserole up to a day in advance. Just refrigerate it and bake it when ready to serve. It may need an extra 5-10 minutes in the oven to warm through.

Q3: Can I substitute sour cream with something else?
Yes, you can use Greek yogurt for a tangy and lighter version, or cream cheese for a richer alternative.

Q4: Can I use vegetable broth instead of chicken broth?
Yes, vegetable broth works perfectly well for a vegetarian version of this casserole.

Conclusion: A Classic Recipe You’ll Make Over and Over Again

The cheesy potato casserole with crispy fried onions is the ultimate comfort food dish that brings together the perfect combination of creamy, cheesy potatoes and crunchy, savory onions. Whether you’re serving it at a holiday dinner or enjoying it on a cozy weekend, it’s a dish that will never disappoint.

Ready to make this delicious casserole? Grab your ingredients, follow the steps, and indulge in a dish that’s sure to be the star of any table. Don’t forget to share this recipe with your friends and family so they can enjoy it too!

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