Roasted Parmesan Creamed Onions
Roasted Parmesan Creamed Onions made with sweet onions, heavy cream, white wine, Parmesan cheese, butter, olive oil, garlic powder, and seasonings.
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Servings: 6
Ingredients
- 3 sweet onions peeled and thinly sliced
- 1 cup heavy cream
- ¼ cup white wine
- ½ cup grated Parmesan cheese
- 4 tbsp unsalted butter
- 3 tbsp extra-virgin olive oil
- 1 tsp garlic powder
- ¼ tsp cayenne optional
- Kosher salt to taste
- Freshly ground black pepper to taste
Instructions
Preheat the oven.
- Preheat the oven to 375ºF.
Arrange the onions.
- Place the thinly sliced sweet onion rings in a 9x13-inch baking dish, keeping the rings and layers as intact as possible.
Season the onions.
- Drizzle the onions with extra-virgin olive oil. Season generously with kosher salt and freshly ground black pepper.
Roast the onions.
- Transfer the baking dish to the oven and roast for 15 minutes, or until the onions begin to soften.
Increase the oven temperature.
- Remove the baking dish from the oven and increase the oven temperature to 450ºF.
Prepare the cream mixture.
- In a medium saucepan over medium heat, combine the heavy cream, white wine, unsalted butter, garlic powder, and optional cayenne.
Heat the sauce.
- Cook the mixture until the butter has melted and small bubbles begin to form around the edges of the cream. Remove the saucepan from the heat.
Add the cream sauce.
- Pour the warm cream mixture evenly over the pre-roasted onions.
Add the Parmesan.
- Sprinkle the grated Parmesan cheese evenly over the onions and cream sauce.
Cover and bake.
- Cover the baking dish with aluminum foil and bake for 20 minutes.
Brown the top.
- Remove the foil and continue baking for 5 to 10 minutes, or until the onions are caramelized and the Parmesan cheese is golden brown.
Serve.
- Remove the dish from the oven and serve hot.
Notes
To make this recipe gluten-free, confirm that the Parmesan cheese, heavy cream, butter, white wine, olive oil, garlic powder, cayenne, salt, and pepper are gluten-free.
Use a certified gluten-free white wine or replace the wine with certified gluten-free chicken broth or vegetable broth.
Check the Parmesan label carefully, especially if using pre-grated cheese, as some brands may contain gluten-based anti-caking agents or be processed with cross-contamination risks.
Use clean cookware, utensils, measuring tools, and baking dishes to avoid cross-contamination.
If serving this dish with a holiday meal, keep it separate from gluten-containing sides such as stuffing, breaded casseroles, or regular dinner rolls.