Netties Onion Casserole

Rich, creamy, and irresistibly comforting, Nettie's Onion Casserole takes humble sweet onions and transforms them into a show-stopping dish bursting with flavor. Featuring tender, caramelized Vidalia onions enveloped in a velvety cheddar cheese sauce and topped with a golden breadcrumb-Parmesan crust, this casserole is the perfect blend of creamy and crunchy textures. With just 20 minutes of prep time, it’s a quick and easy recipe that's ideal for holidays, potlucks, or weeknight dinners. Serve it as a decadent side dish or let it shine as a comforting vegetarian main. Your kitchen will be filled with the irresistible aroma of bubbling cheese and toasty breadcrumbs—this is a recipe your family and guests will beg you to make again and again.

Nutriscore Rating: 62/100

Prep Time:20 mins

Cook Time:45 mins

Total Time:65 mins

Servings: 6

Ingredients

• 4 large sweet onions (such as Vidalia)
• 4 tablespoons unsalted butter
• 3 tablespoons all-purpose flour
• 2 cups whole milk
• 1.5 cups shredded cheddar cheese
• 1 cup sour cream
• 1 teaspoon salt
• 0.5 teaspoon ground black pepper
• 1 cup breadcrumbs
• 0.5 cup grated Parmesan cheese
• 1 tablespoon olive oil

Directions

Step 1

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

Step 2

Peel and slice the onions into thin rings. In a large skillet, melt 2 tablespoons of butter over medium heat and sauté the onions for 10-12 minutes, stirring occasionally, until they are soft and lightly golden. Set aside.

Step 3

In a medium saucepan, melt the remaining 2 tablespoons of butter over medium heat. Add the flour and whisk continuously for 1-2 minutes to create a roux.

Step 4

Slowly pour in the milk, whisking constantly, and cook for 3-4 minutes until the mixture thickens into a creamy sauce.

Step 5

Remove the saucepan from heat and stir in the shredded cheddar cheese, sour cream, salt, and black pepper until smooth.

Step 6

Add the sautéed onions to the cheese mixture and mix gently to coat the onions evenly.

Step 7

Pour the onion and cheese mixture into the prepared casserole dish and spread it evenly.

Step 8

In a small bowl, mix together the breadcrumbs, grated Parmesan cheese, and olive oil until combined. Sprinkle the breadcrumb mixture evenly over the casserole.

Step 9

Bake the casserole in the preheated oven for 25-30 minutes, or until the top is golden and bubbling.

Step 10

Let the casserole cool for 5-10 minutes before serving. Enjoy warm as a side dish or main course.

Nutrition Facts

Serving size	(1702.4g)

Amount per serving	% Daily Value*
Calories	2475.9

Total Fat 150.7g	0%
Saturated Fat 84.8g	0%
Polyunsaturated Fat 1.9g
Cholesterol 404.2mg	0%
Sodium 6048.0mg	0%
Total Carbohydrate 204.0g	0%
Dietary Fiber 18.3g	0%
Total Sugars 71.0g
Protein 101.0g	0%

Vitamin D 214.7IU	0%
Calcium 2507.8mg	0%
Iron 7.9mg	0%
Potassium 1950.7mg	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: 52.6%

Protein: 15.7%

Carbs: 31.7%