Outer Slobodnikanian French Onion Hash Browns Casserole

Discover the ultimate comfort food fusion with this Outer Slobodnikanian French Onion Hash Browns Casserole, a tantalizing blend of creamy, cheesy hash browns and the rich, caramelized essence of French onion soup. Perfectly seasoned frozen hash browns are mixed with sour cream, Gruyère, and cheddar cheese, folded into a luscious base of golden caramelized onions infused with garlic and beef stock. Topped with a buttery Parmesan-breadcrumb crust, this casserole bakes to perfection with a golden, crispy top and bubbling, savory interior. Ideal for brunches, holiday potlucks, or cozy family dinners, this dish brings bold flavors and irresistible textures to your table. Make-ahead friendly and generously portioned to serve a crowd, it's the go-to recipe for anyone who loves indulgent yet easy-to-prepare comfort food. Keywords: French Onion Hash Browns Casserole, caramelized onions, cheesy hash brown bake, comfort food casserole recipe.

Nutriscore Rating: 58/100

Prep Time:30 mins

Cook Time:60 mins

Total Time:90 mins

Servings: 8

Ingredients

• 900 grams frozen shredded hash browns
• 4 medium yellow onions
• 6 tablespoons butter
• 2 tablespoons olive oil
• 2 garlic cloves
• 120 milliliters beef stock
• 250 grams sour cream
• 200 grams shredded Gruyère cheese
• 100 grams shredded cheddar cheese
• 1 teaspoon thyme leaves
• 1 teaspoon salt
• 0.5 teaspoons black pepper
• 60 grams breadcrumbs
• 30 grams Parmesan cheese

Directions

Step 1

Preheat your oven to 190°C (375°F). Grease a 9x13-inch casserole dish and set aside.

Step 2

Peel and thinly slice the yellow onions. Heat a large skillet over medium heat and add 4 tablespoons of butter and 2 tablespoons of olive oil.

Step 3

Add the onions to the skillet and sauté for 25–30 minutes, stirring occasionally, until they are deeply golden and caramelized. Reduce the heat as needed to prevent burning.

Step 4

Mince the garlic cloves and add them to the caramelized onions in the last 2 minutes of cooking. Stir well to combine, then deglaze the skillet with beef stock. Cook for another 2 minutes and remove from heat.

Step 5

In a large mixing bowl, combine the frozen hash browns, sour cream, shredded Gruyère cheese, shredded cheddar cheese, thyme leaves, salt, and black pepper.

Step 6

Fold the caramelized onion mixture into the hash brown mixture until evenly combined. Transfer the mixture to the greased casserole dish and flatten with a spatula.

Step 7

In a small bowl, melt the remaining 2 tablespoons of butter and mix it with the breadcrumbs and Parmesan cheese. Sprinkle this topping evenly over the casserole.

Step 8

Bake the casserole in the preheated oven for 45–50 minutes, or until the top is golden brown and the edges are bubbling.

Step 9

Let the casserole cool for 10 minutes before serving. Garnish with additional thyme leaves, if desired.

Nutrition Facts

Serving size	(2227.4g)

Amount per serving	% Daily Value*
Calories	4375.8

Total Fat 293.0g	0%
Saturated Fat 157.1g	0%
Polyunsaturated Fat 4.8g
Cholesterol 670.5mg	0%
Sodium 9314.4mg	0%
Total Carbohydrate 324.8g	0%
Dietary Fiber 31.5g	0%
Total Sugars 40.2g
Protein 137.3g	0%

Vitamin D 56.3IU	0%
Calcium 3370.7mg	0%
Iron 12.6mg	0%
Potassium 4513.2mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 58.8%

Protein: 12.2%

Carbs: 29.0%