Broccoli Onion Au Gratin
Elevate your side dish game with this irresistible Broccoli Onion Au Gratin, a creamy and cheesy masterpiece that's perfect for family dinners or holiday feasts. Featuring tender, blanched broccoli florets layered with sweet caramelized onions, this dish is smothered in a velvety cheddar-Parmesan cheese sauce infused with a hint of nutmeg for extra depth. Topped with a golden, crunchy breadcrumb crust, this baked gratin is as satisfying as it is easy to prepare. With just 20 minutes of prep and 30 minutes in the oven, this comforting side serves six and pairs beautifully with roast chicken, beef, or a vegetarian main. Indulge in the cozy flavors of this classic casserole while delighting guests with its beautiful presentation.
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Recipe Information
Ingredients
- 500 grams Broccoli florets
- 2 medium Yellow onion
- 3 tablespoons Butter
- 2 tablespoons All-purpose flour
- 250 milliliters Milk
- 150 grams Sharp cheddar cheese, shredded
- 50 grams Parmesan cheese, grated
- 75 grams Breadcrumbs
- 1 tablespoon Olive oil
- 1 teaspoon Salt
- 0.5 teaspoons Black pepper
- 0.25 teaspoons Nutmeg (optional)
Instructions
Preheat your oven to 190°C (375°F). Grease a medium-sized baking dish and set it aside.
Bring a large pot of salted water to a boil. Add the broccoli florets and blanch them for 2-3 minutes. Drain immediately and rinse with cold water to stop the cooking process. Set the broccoli aside.
Peel and thinly slice the onions. In a large skillet over medium heat, melt 1 tablespoon of butter and add the sliced onions and a pinch of salt. Cook for 8-10 minutes, stirring occasionally, until the onions are soft and caramelized. Remove them from the skillet and set aside.
In the same skillet, melt the remaining 2 tablespoons of butter over medium heat. Sprinkle in the flour and whisk constantly for 1 minute to form a roux.
Gradually pour in the milk while whisking, ensuring there are no lumps. Cook for 2-3 minutes, stirring frequently, until the mixture begins to thicken.
Reduce the heat to low and add the cheddar cheese, parmesan cheese, salt, black pepper, and nutmeg (if using). Stir until the cheese is fully melted and the sauce is smooth.
In the prepared baking dish, layer the blanched broccoli and caramelized onions. Pour the cheese sauce evenly over the vegetables, ensuring everything is well coated.
In a small bowl, combine the breadcrumbs with olive oil and a pinch of salt. Sprinkle the breadcrumb mixture evenly over the top of the cheese sauce.
Bake the dish in the preheated oven for 20-25 minutes, or until the topping is golden brown and the sauce is bubbling.
Allow the Broccoli Onion Au Gratin to rest for 5 minutes before serving.
Nutrition Facts
Calories |
1925 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 121.9 g | 156% | |
| Saturated Fat | 67.8 g | 339% | |
| Polyunsaturated Fat | 2.6 g | ||
| Cholesterol | 333 mg | 111% | |
| Sodium | 5854 mg | 255% | |
| Total Carbohydrate | 133.6 g | 49% | |
| Dietary Fiber | 19.3 g | 69% | |
| Total Sugars | 33.7 g | ||
| Protein | 98.9 g | 198% | |
| Vitamin D | 3.8 mcg | 19% | |
| Calcium | 2280 mg | 175% | |
| Iron | 10.3 mg | 57% | |
| Potassium | 927 mg | 20% | |
*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.
