Perfect Roasted Onions with Parmesan Cream

Elevate the flavors of roasted onions with a luscious Parmesan cream in this delightful and savory recipe.

The caramelized sweetness of the roasted onions perfectly complements the rich and creamy Parmesan sauce, creating a mouthwatering side dish that will impress your guests.

In this article, we’ll provide you with a convenient table sheet format of the required ingredients, making it easy to prepare this gourmet dish at home.


To make this delectable dish, gather the following ingredients:

Large Onions 4
Olive Oil 2 tablespoons
Salt 1 teaspoon
Black Pepper 1/2 teaspoon
Fresh Thyme Leaves 1 tablespoon
Grated Parmesan Cheese 1/2 cup
Heavy Cream 1 cup
Butter 2 tablespoons


  1. Preheat your oven to 400°F (200°C).
  2. Peel the onions and cut them into thick slices, about 1/2 inch in thickness.
  3. Place the onion slices on a baking sheet, and drizzle them with olive oil.
  4. Sprinkle the sliced onions with salt, black pepper, and fresh thyme leaves, ensuring they are evenly seasoned.
  5. Roast the onions in the preheated oven for 20-25 minutes or until they become tender and golden brown at the edges.
  6. While the onions are roasting, prepare the Parmesan cream sauce.
  7. In a saucepan, melt the butter over medium heat.
  8. Add the heavy cream and grated Parmesan cheese to the saucepan, stirring continuously until the cheese is fully melted and the sauce is smooth and creamy.
  9. Reduce the heat to low and let the Parmesan cream sauce simmer for a few minutes until it thickens slightly.
  10. Once the onions are done roasting, arrange them on a serving platter.
  11. Drizzle the luscious Parmesan cream sauce over the roasted onions, ensuring they are generously coated.
  12. Garnish with extra thyme leaves if desired.
  13. Serve the Roasted Onions with Parmesan Cream as a sumptuous side dish or appetizer.

Tips for Perfect Roasted Onions with Parmesan Cream

  • Choose large onions with firm texture for the best results in this recipe.
  • If you prefer a stronger Parmesan flavor, you can add more grated cheese to the cream sauce.
  • Feel free to customize the dish with additional herbs or spices to suit your taste preferences.

The Elegance of Roasted Onions with Parmesan Cream

This gourmet side dish brings together the richness of Parmesan cream and the natural sweetness of roasted onions, making it a perfect addition to any special occasion or dinner party.


  1. Can I use different types of onions for this recipe? Yes, you can use different types of onions, such as red onions or sweet onions, for a slightly different flavor profile. However, large onions work best for this dish.
  2. Can I roast the onions in advance and reheat them later? While freshly roasted onions are best, you can roast them ahead of time and reheat them in the oven at a low temperature before serving. However, the texture and flavor may not be as optimal as freshly roasted onions.
  3. Is it necessary to peel the onions before roasting? Yes, it’s essential to peel the onions before roasting them to ensure even cooking and to remove any outer layers that may become tough during roasting.
  4. Can I use dried thyme instead of fresh thyme leaves? Fresh thyme leaves provide the best flavor, but you can use dried thyme if fresh thyme is not available. Use about half the amount of dried thyme as the recipe calls for fresh.
  5. Can I substitute the heavy cream with a lighter option? Yes, you can use half-and-half or whole milk instead of heavy cream for a lighter version of the Parmesan cream sauce. However, the sauce may not be as thick and rich.
  6. Can I prepare the Parmesan cream sauce in advance? Yes, you can prepare the Parmesan cream sauce ahead of time and refrigerate it. Reheat the sauce gently over low heat before serving, stirring occasionally to maintain its smooth texture.
  7. What can I serve with Roasted Onions with Parmesan Cream? This dish pairs well with grilled or roasted meats, such as chicken, beef, or pork. It also makes a delicious side dish for pasta dishes or as part of a vegetarian meal.
  8. Can I add other herbs or spices to the Parmesan cream sauce? Absolutely! Feel free to experiment with different herbs or spices to enhance the flavor of the sauce. Fresh basil, rosemary, or a pinch of nutmeg are some great options.
  9. Can I make a larger batch of this recipe for a party? Certainly! You can double or triple the ingredients to accommodate a larger group. Just adjust the cooking time accordingly based on the quantity of onions.
  10. Can I use pre-grated Parmesan cheese instead of freshly grated? While freshly grated Parmesan cheese provides the best flavor, you can use pre-grated Parmesan if that’s what you have on hand. Just make sure it’s a good quality cheese for the best taste.

With this Roasted Onions with Parmesan Cream recipe, you have a luxurious and flavorful side dish that will elevate any meal. The tender, caramelized onions paired with the creamy Parmesan sauce create a harmony of tastes that will leave your taste buds longing for more. So, impress your guests and loved ones with this exquisite and delectable dish!

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