Easy Parmesan Onion Bake

Indulge in the rich and savory flavors of this Easy Parmesan Onion Bake, a crowd-pleasing side dish that’s perfect for any occasion! Made with sweet onions caramelized to perfection and layered with creamy heavy cream, a touch of garlic, and a golden topping of Parmesan cheese and crispy panko breadcrumbs, this dish is the ultimate comfort food. With just 15 minutes of prep time and a handful of pantry staples, this baked onion casserole delivers a luxurious, cheesy texture with a hint of crunch in every bite. Whether you’re serving it alongside roasted meats or as a centerpiece for a vegetarian spread, this versatile dish is guaranteed to impress. Don’t forget the optional garnish of fresh parsley for a pop of color and flavor!

Nutriscore Rating: 56/100

Prep Time:15 mins

Cook Time:40 mins

Total Time:55 mins

Servings: 6

Ingredients

• 4 large Sweet onions
• 4 tablespoons Butter
• 1 teaspoon Garlic powder
• 1 teaspoon Salt
• 0.5 teaspoon Black pepper
• 1 cup Heavy cream
• 1.5 cups Grated Parmesan cheese
• 0.75 cup Panko breadcrumbs
• 2 tablespoons Fresh parsley (optional, for garnish)

Directions

Step 1

Preheat your oven to 375°F (190°C).

Step 2

Peel the sweet onions and cut them into 1/4-inch thick slices. Separate the slices into rings and set aside.

Step 3

Melt the butter in a large skillet over medium heat. Add the onion rings to the skillet and sauté for 5-7 minutes until they begin to soften and turn lightly golden.

Step 4

Season the onions with garlic powder, salt, and black pepper. Stir well to ensure the seasoning is evenly distributed.

Step 5

Transfer the sautéed onion rings to a greased 9x13-inch baking dish, spreading them out evenly.

Step 6

Pour the heavy cream over the onions, making sure they are evenly coated.

Step 7

In a small bowl, combine the grated Parmesan cheese and panko breadcrumbs. Mix well.

Step 8

Sprinkle the Parmesan-breadcrumb mixture evenly over the onions.

Step 9

Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the top is golden brown and bubbly.

Step 10

Remove the dish from the oven and let it cool for 5 minutes. Garnish with freshly chopped parsley, if desired, and serve warm.

Nutrition Facts

Serving size	1265 grams (1265.0g)

Amount per serving	% Daily Value*
Calories	2177

Total Fat 164.20g	211%
Saturated Fat 97.70g	489%
Polyunsaturated Fat 1.40g
Cholesterol 492mg	164%
Sodium 5062mg	220%
Total Carbohydrate 107.30g	39%
Dietary Fiber 15.50g	55%
Total Sugars 43.10g
Protein 63.30g	127%

Vitamin D 9IU	45%
Calcium 1542mg	119%
Iron 4mg	22%
Potassium 1226mg	26%

*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: 68.4%

Protein: 11.7%

Carbs: 19.9%