Preheat the Oven
Preheat your oven to 400°F (200°C).
Grease a baking dish or skillet with a little olive oil or butter.
2. Caramelize the Onions
In a large skillet, heat the olive oil (or butter) over medium heat. Add the sliced onions, sugar (if using), salt, and pepper.
Cook the onions, stirring occasionally, for 15–20 minutes until they are soft, golden brown, and caramelized. If using garlic, add it during the last 2 minutes of cooking.
3. Combine with Cream and Cheese
Once the onions are caramelized, transfer them to the prepared baking dish.
Pour the heavy cream evenly over the onions.
Sprinkle the grated Parmesan cheese and thyme leaves over the top.
4. Bake
Bake in the preheated oven for 20–25 minutes, or until the cream is bubbly and the Parmesan forms a golden crust on top.
For extra browning, broil for 2–3 minutes at the end, keeping a close eye to prevent burning.
5. Serve and Enjoy
Remove from the oven and let the dish cool slightly before serving.
Serve warm as a side dish alongside roasted meats, mashed potatoes, or crusty bread.
Garnish with additional fresh thyme or a sprinkle of Parmesan if desired.
Tips for Success
Use Sweet Onions: Varieties like Vidalia or Walla Walla onions are naturally sweeter and caramelize beautifully.
Low and Slow Caramelization: Cook the onions slowly to bring out their natural sugars and achieve deep caramelization.
Add a Splash of Wine: Deglaze the pan with a tablespoon of white wine or balsamic vinegar after caramelizing the onions for an extra layer of flavor.
Make Ahead: Prepare the caramelized onions up to a day in advance, then assemble and bake just before serving.
Why This Recipe Works
These Roasted Parmesan Creamed Onions combine the natural sweetness of caramelized onions with the creamy richness of heavy cream and the nutty sharpness of Parmesan cheese. The result is a dish that’s indulgent yet balanced, offering layers of flavor and texture that complement a wide range of main courses. Whether served as a side dish or a standalone treat, this recipe delivers big on taste and simplicity without requiring advanced cooking skills.
Conclusion: A Comforting Side Dish That’s Sure to Impress
Whether you’re looking for a show-stopping side dish for the holidays, a comforting addition to your dinner table, or simply a way to elevate humble onions, these Roasted Parmesan Creamed Onions are sure to delight. Their creamy textures, rich flavors, and customizable options make them a standout recipe that’s as practical as it is delicious. Plus, their adaptability means you can tailor them to suit any occasion.
We’d love to see your creations! Tag us in your photos or share your favorite variations—your take on these creamed onions might just inspire others to try them too!
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