Vidalia Onion Swiss Bake

Indulge in the savory perfection of Vidalia Onion Swiss Bake, a comforting and easy-to-make casserole that takes sweet, caramelized Vidalia onions to the next level. This irresistible dish features tender onions sautéed in butter and blended into a creamy Swiss cheese sauce, then topped with a crunchy layer of golden panko breadcrumbs and Parmesan. Baked until bubbly and golden, this recipe showcases the natural sweetness of Vidalia onions while delivering a luxurious, cheesy richness. Perfect as a standout side dish or served with crusty bread, it’s a guaranteed crowd-pleaser for weeknight dinners or holiday gatherings. Ready in under an hour, this cheesy Vidalia onion casserole is the ultimate comfort food you've been missing!

Nutriscore Rating: 76/100

Prep Time:15 mins

Cook Time:40 mins

Total Time:55 mins

Servings: 6

Ingredients

• 4 large (about 2 lbs) Vidalia onions
• 4 tablespoons Butter
• 2 tablespoons All-purpose flour
• 1.5 cups Whole milk
• 0.5 teaspoons Salt
• 0.25 teaspoons Black pepper
• 2 cups (shredded) Swiss cheese
• 0.5 cups Panko breadcrumbs
• 0.25 cups (grated) Parmesan cheese
• 1 tablespoon Olive oil

Directions

Step 1

Preheat your oven to 375°F (190°C). Lightly grease a 9x9-inch baking dish and set aside.

Step 2

Peel and slice the Vidalia onions into 1/4-inch thick rings.

Step 3

In a large skillet, melt the butter over medium heat. Add the onions and sauté for 10–12 minutes, stirring occasionally, until they soften and become translucent. Remove from heat.

Step 4

Sprinkle the flour over the onions and stir well to combine, ensuring there are no lumps. Gradually pour in the milk, stirring constantly. Return the skillet to low heat.

Step 5

Add the salt and black pepper, and cook the mixture gently for 3–4 minutes, stirring frequently, until it thickens into a creamy sauce.

Step 6

Stir in 1.5 cups of the shredded Swiss cheese until melted and incorporated into the sauce. Remove from heat.

Step 7

Transfer the onion and cheese mixture to the prepared baking dish, spreading it evenly.

Step 8

In a small bowl, mix the panko breadcrumbs, grated Parmesan cheese, and olive oil until the crumbs are lightly coated.

Step 9

Sprinkle the breadcrumb mixture evenly over the onions. Top with the remaining 0.5 cups of Swiss cheese.

Step 10

Place the baking dish in the preheated oven and bake for 25–30 minutes, or until the top is golden brown and bubbly.

Step 11

Remove from the oven and let rest for 5 minutes before serving. Enjoy your Vidalia Onion Swiss Bake as a side dish or with a crusty piece of bread!

Nutrition Facts

Serving size	(4349.3g)

Amount per serving	% Daily Value*
Calories	2855.9

Total Fat 94.6g	0%
Saturated Fat 46.9g	0%
Polyunsaturated Fat 3.5g
Cholesterol 273.4mg	0%
Sodium 2518.6mg	0%
Total Carbohydrate 395.6g	0%
Dietary Fiber 63.1g	0%
Total Sugars 204.1g
Protein 126.9g	0%

Vitamin D 178.6IU	0%
Calcium 3609.1mg	0%
Iron 9.7mg	0%
Potassium 6123.0mg	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: 28.9%

Protein: 17.3%

Carbs: 53.8%