Hashbrown Casserole (Creamy, Cheesy, Classic Comfort Food)
This Hashbrown Casserole is the ultimate comfort-food side dish—rich, creamy, and packed with cheesy goodness. Made with shredded hash brown potatoes, a homemade creamy cheese sauce, and baked until golden and bubbly, this casserole is perfect for family dinners, holidays, potlucks, and brunch gatherings.
Unlike shortcut versions, this recipe uses a from-scratch cheese sauce, giving it a deeper flavor and smoother texture that truly sets it apart.
Why You’ll Love This Hashbrown Casserole
Creamy, cheesy, and ultra-comforting
Made with real ingredients
Perfect for make-ahead meals
Feeds a crowd easily
Great for holidays like Thanksgiving, Christmas, and Easter
Ingredients
For the Casserole
30 oz frozen shredded hash brown potatoes, thawed
2 tablespoons olive oil
1 yellow onion, diced
3 large garlic cloves, minced
1/4 cup all-purpose flour
2 cups whole milk (reduced-fat works too)
1 cup chicken stock
1 cup sour cream
8 oz shredded sharp cheddar cheese
1½ tablespoons minced fresh parsley (or 1 teaspoon dried parsley)
Salt, to taste
Fresh cracked black pepper, to taste
For the Topping
1 cup shredded sharp cheddar cheese
Step-by-Step Instructions
Step 1: Preheat & Prepare
Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch casserole dish with butter or cooking spray and set aside.
Step 2: Sauté the Onion
Heat a medium saucepan over medium heat. Add olive oil and allow it to heat through. Add the diced onion and sauté for 4–5 minutes, stirring occasionally, until soft and lightly golden.
Step 3: Add Garlic
Add the minced garlic to the onions. Stir and cook for about 30 seconds, just until fragrant. Be careful not to burn it.
Step 4: Make the Roux
Sprinkle the flour evenly over the onion mixture. Stir constantly for 30–60 seconds to cook out the raw flour taste.
Step 5: Add Liquids
Slowly pour in the chicken stock while stirring continuously to prevent lumps. Once combined, gradually add the milk, continuing to stir.
Let the mixture heat through and simmer gently until it thickens into a creamy sauce.
Step 6: Add Cheese & Seasoning
Lower the heat slightly and stir in:
Sour cream
Shredded cheddar cheese
Salt and black pepper
Stir until the cheese is fully melted and the sauce is smooth and creamy. Taste and adjust seasoning as needed.
Step 7: Add Parsley
Stir in the minced parsley and remove the sauce from heat.
Step 8: Combine with Hash Browns
In a large mixing bowl, combine the thawed hash browns with the cheese sauce. Mix until the potatoes are evenly coated.
Step 9: Assemble the Casserole
Spread the mixture evenly into the prepared casserole dish. Sprinkle the remaining 1 cup of shredded cheddar cheese over the top.
Step 10: Bake
Bake uncovered for 35–40 minutes, or until the top is golden brown and the casserole is bubbling around the edges.
Let it rest for 5–10 minutes before serving.
Tips for the Best Hashbrown Casserole
Drain excess moisture from hash browns to prevent a watery casserole
Use sharp cheddar for maximum flavor
Let the casserole rest before serving to help it set
For extra crispiness, broil for the last 2–3 minutes
Variations & Add-Ins
Add Protein: Stir in cooked bacon, ham, or shredded chicken
Make It Vegetarian: Replace chicken stock with vegetable stock
Extra Crunch: Top with buttered breadcrumbs or crushed crackers
Spicy Twist: Add diced jalapeños or a pinch of cayenne
Make-Ahead & Storage
Make Ahead:
Assemble the casserole, cover tightly, and refrigerate for up to 24 hours before baking.
Refrigerate:
Store leftovers in an airtight container for 3–4 days.
Reheat:
Warm in the oven at 325°F or microwave individual portions.
What to Serve with Hashbrown Casserole
Roast chicken or turkey
Breakfast eggs and sausage
Holiday ham
Fresh green salad
Final Thoughts
This Hashbrown Casserole recipe is creamy, cheesy, and baked to perfection—everything a classic comfort dish should be. Whether you’re making it for a holiday table or a cozy family dinner, it’s guaranteed to be a crowd favorite.