Patti's Creamy Baked Onions is the ultimate comfort food side dish that turns humble yellow onions into a decadent, golden masterpiece. Featuring layers of tender onion rings blanketed in a rich, velvety cheddar cheese sauce, this dish is finished with a tempting topping of crispy panko breadcrumbs, Parmesan, and a hint of nutmeg for an added depth of flavor. Blanched onions are baked to bubbly perfection, creating a crowd-pleasing side ideal for holiday feasts or cozy dinners. Easy to prepare in under an hour, this recipe is a flavorful twist on traditional casseroles, delivering creamy textures and satisfying crunch in every bite. Serve it warm, garnished with fresh parsley for a pop of color, and watch it disappear at the table! Perfect for anyone searching for "creamy onion side dish" or "baked onion casserole recipe."
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Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish with butter or cooking spray.
Peel the onions and slice them into 1/2-inch thick rings. Carefully separate the rings and discard any very small or irregular pieces.
Bring a large pot of water to a boil and blanch the onion rings for 3-4 minutes. Drain and set aside to cool slightly.
In a medium saucepan, melt the butter over medium heat. Stir in the flour and cook, stirring constantly, for 1-2 minutes to make a roux.
Gradually whisk in the milk and heavy cream, ensuring there are no lumps. Cook for 3-4 minutes, stirring constantly, until the mixture thickens.
Season the sauce with salt, black pepper, and nutmeg. Remove from heat and stir in the shredded cheddar cheese until melted and smooth.
Arrange the partially cooked onion rings evenly in the prepared baking dish. Pour the cheese sauce over the onions, ensuring they are evenly coated.
In a small bowl, combine the panko breadcrumbs, grated Parmesan cheese, and olive oil. Mix until the breadcrumbs are evenly coated.
Sprinkle the breadcrumb mixture over the onions and cheese sauce in an even layer.
Bake in the preheated oven for 25-30 minutes, or until the breadcrumbs are golden brown and the sauce is bubbling.
Remove from the oven and let the dish rest for 5 minutes before serving. Garnish with chopped fresh parsley, if desired.
Serve warm and enjoy Patti's Creamy Baked Onions as a delightful side dish!
Serving size | (1320.9g) |
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Amount per serving | % Daily Value* |
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Calories | 1939.3 |
Total Fat 141.6g | 0% |
Saturated Fat 80.0g | 0% |
Polyunsaturated Fat 1.6g | |
Cholesterol 385.9mg | 0% |
Sodium 2621.3mg | 0% |
Total Carbohydrate 110.2g | 0% |
Dietary Fiber 12.0g | 0% |
Total Sugars 45.4g | |
Protein 60.3g | 0% |
Vitamin D 185.0IU | 0% |
Calcium 1630.3mg | 0% |
Iron 4.1mg | 0% |
Potassium 1627.4mg | 0% |
Source of Calories