If you're looking for the perfect comfort food dish that’s creamy, cheesy, and packed with flavor, this Sour Cream and Onion Potato Casserole is just what you need. This casserole combines tender potatoes, tangy sour cream, and savory onions, topped with a crispy, golden crust for the ultimate side dish or even a main course.
Whether you're making it for a family dinner, a holiday gathering, or a potluck, this recipe is sure to be a crowd-pleaser.
Why You'll Love This Recipe
Easy to Make: Simple ingredients and minimal prep make this a quick and fuss-free recipe.
Rich & Creamy: The perfect balance of sour cream, cheese, and butter gives this dish a luxurious texture.
Versatile: Serve it as a side dish with your favorite protein or enjoy it as a stand-alone meal.
Crowd Favorite: Everyone loves potatoes, and this version is particularly irresistible with its onion-infused flavor.
Ingredients
To make this delicious Sour Cream and Onion Potato Casserole, you’ll need the following:
Main Ingredients
6 medium russet potatoes (peeled and thinly sliced)
1 cup sour cream
1 cup shredded cheddar cheese
½ cup grated Parmesan cheese
1 medium onion (finely chopped)
2 cloves garlic (minced)
½ cup unsalted butter (melted)
½ cup whole milk
1 teaspoon salt
½ teaspoon black pepper
1 teaspoon garlic powder
1 teaspoon onion powder
For the Topping
1 cup crushed butter crackers (like Ritz) or breadcrumbs
¼ cup melted butter
¼ cup chopped fresh chives or green onions (optional)
Step-by-Step Instructions
Step 1: Prepare the Potatoes
Preheat your oven to 375°F (190°C).
Peel and thinly slice the potatoes to about ¼-inch thickness. This ensures even cooking and a creamy texture.
Bring a large pot of salted water to a boil and parboil the potato slices for 5 minutes. Drain and set aside.
Step 2: Prepare the Creamy Sauce
In a large skillet, melt ½ cup of butter over medium heat.
Add the chopped onion and sauté for 3-4 minutes until soft and translucent.
Stir in the minced garlic and cook for 30 seconds until fragrant.
Remove from heat and mix in the sour cream, cheddar cheese, Parmesan cheese, whole milk, salt, black pepper, garlic powder, and onion powder. Stir until everything is well combined.
Step 3: Assemble the Casserole
Grease a 9x13-inch baking dish with butter or cooking spray.
Layer half of the potato slices evenly in the dish.
Pour half of the creamy mixture over the potatoes and spread evenly.
Repeat with the remaining potatoes and sauce.
Step 4: Prepare the Crispy Topping
In a small bowl, combine crushed butter crackers (or breadcrumbs) with ¼ cup melted butter.
Sprinkle the mixture evenly over the top of the casserole.
Step 5: Bake the Casserole
Cover the baking dish with foil and bake for 30 minutes.
Remove the foil and bake for an additional 15 minutes until the topping is golden brown and crispy.
Let the casserole rest for 5-10 minutes before serving.
Tips for the Best Sour Cream and Onion Potato Casserole
Use Yukon Gold Potatoes: If you prefer a creamier texture, Yukon Gold potatoes are a great alternative to russets.
Add Protein: Make it a full meal by adding cooked bacon bits, shredded chicken, or ground beef.
Make it Ahead: Assemble the casserole up to a day in advance, cover, and refrigerate. Bake when ready to serve.
For Extra Crispiness: Broil the casserole for 2-3 minutes at the end of baking for an extra golden crust.
Frequently Asked Questions (FAQs)
1. Can I Use Frozen Hash Browns Instead of Fresh Potatoes?
Yes! You can replace fresh potatoes with frozen hash browns (thawed) for an even quicker recipe. Adjust the baking time to 40-45 minutes.
2. What Can I Serve with This Casserole?
This dish pairs well with grilled meats, roasted chicken, or a fresh green salad. It's also great as a holiday side dish with ham or turkey.
3. Can I Make This Casserole Without Cheese?
Yes! If you prefer a lighter version, omit the cheese and use Greek yogurt instead of sour cream for a tangy but creamy result.
4. How Do I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F for 15 minutes or in the microwave.
5. Can I Freeze This Casserole?
Yes, you can! Assemble the casserole, cover tightly with plastic wrap and aluminum foil, and freeze for up to 2 months. When ready to bake, thaw overnight in the fridge and bake as directed.
6. Can I Add Vegetables to This Casserole?
Absolutely! Mix in veggies like spinach, mushrooms, or bell peppers to add extra nutrients and flavor.
Final Thoughts
This Sour Cream and Onion Potato Casserole is the perfect mix of creamy, cheesy, and crispy goodness. Whether you're making it for a weeknight dinner, a festive gathering, or a cozy weekend meal, it’s guaranteed to be a hit. Give this recipe a try, and let us know how it turns out!
Enjoy your homemade casserole, and happy cooking!
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