For a deeper flavor, try using balsamic vinegar in addition to the red wine. Adjust the amount of sugar to your liking, depending on the sweetness of the wine and the onions. These onions are best served warm or at room temperature.
Transform humble onions into a culinary masterpiece with this simple yet elegant recipe. The dry, fruity red wine infuses the onions with a deep, rich flavor, while the roasting process caramelizes them to perfection. Serve these delectable onions as a sophisticated topping for sandwiches, an enriching addition to pasta dishes, or a savory complement to baked potatoes.
Preheat the oven to 425 degrees F (220 degrees C). (5 minutes)
Whisk together wine, oil, sugar, and salt in a 3-qt. rectangular baking dish. Add onions. Cover with foil. Roast for 30 minutes.
Stir onions. Roast, uncovered and stirring once, until onions are tender and caramelized and liquid in the bottom of dish is thickened, about 30 minutes more. Garnish with thyme.
For a deeper flavor, try using balsamic vinegar in addition to the red wine. Adjust the amount of sugar to your liking, depending on the sweetness of the wine and the onions. These onions are best served warm or at room temperature.
Louie Mccullough
Jun 21, 2025I added a pinch of red pepper flakes for a little heat and it was a great addition.
Dejuan Windler
Jun 21, 2025So easy to make and incredibly delicious. I will definitely be making these again.
Major Swift
Jun 20, 2025These onions were amazing! The wine added such a depth of flavor.
Felix Schmidt
Jun 20, 2025I used a Cabernet Sauvignon and they turned out fantastic. Great recipe!
Mafalda Dubuque
May 31, 2025The thyme really elevates the dish. I served them with steak and it was a perfect pairing.