Transform simple ingredients into an irresistible comfort food with this rich and cheesy Onion Bake. Featuring layers of sweet, caramelized yellow onions bathed in a creamy Gruyere-infused sauce and topped with a golden breadcrumb-Parmesan crust, this dish is a savory masterpiece that pairs perfectly with anything from roasted meats to fresh salads. The caramelizing process intensifies the onions' natural sweetness, while the combination of melted cheeses and crisp topping adds a delightful texture contrast. Ready in about an hour, this crowd-pleaser is easy to prepare and delivers big flavor in every bite. Perfect for holidays, dinner parties, or weeknight indulgence, this Onion Bake is a must-try for those who crave hearty, flavorful side dishes.
Preheat your oven to 375°F (190°C). Grease a medium-sized baking dish with butter or non-stick cooking spray.
Peel and thinly slice the yellow onions into half-moon shapes.
Heat a large skillet over medium heat. Add the unsalted butter and olive oil, allowing the butter to melt completely.
Add the sliced onions to the skillet and cook for 20-25 minutes, stirring occasionally, until the onions are golden brown and caramelized. Lower the heat if necessary to prevent burning.
Transfer the caramelized onions to the greased baking dish, spreading them out evenly.
In a small saucepan over low heat, warm the heavy cream gently, then stir in 1 cup of the shredded Gruyere cheese, garlic powder, salt, and black pepper. Stir until the cheese is melted and the mixture is smooth.
Pour the cheese and cream mixture over the onions in the baking dish, ensuring the onions are evenly coated.
In a mixing bowl, combine the breadcrumbs, remaining 0.5 cups of Gruyere cheese, grated Parmesan cheese, and chopped parsley.
Sprinkle the breadcrumb mixture evenly over the onions and cheese in the baking dish to form a topping.
Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the top is golden brown and bubbling.
Remove the onion bake from the oven and let it rest for 5 minutes before serving. Garnish with additional parsley if desired.
Calories |
2613 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 201.1 g | 258% | |
| Saturated Fat | 110.0 g | 550% | |
| Polyunsaturated Fat | 1.3 g | ||
| Cholesterol | 553 mg | 184% | |
| Sodium | 5624 mg | 245% | |
| Total Carbohydrate | 121.0 g | 44% | |
| Dietary Fiber | 13.9 g | 50% | |
| Total Sugars | 33.6 g | ||
| Protein | 83.0 g | 166% | |
| Vitamin D | 0.9 mcg | 4% | |
| Calcium | 2282 mg | 176% | |
| Iron | 6.6 mg | 37% | |
| Potassium | 1163 mg | 25% | |
*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.