Rosemary Roasted Onions
Transform simple onions into an elegant side dish with this recipe for Rosemary Roasted Onions. Sweet, caramelized onion halves are roasted to perfection with a drizzle of olive oil, fresh rosemary sprigs, and a touch of salt and pepper, creating a rich medley of flavors that’s both rustic and refined. Optional balsamic vinegar adds a subtle tangy sweetness, enhancing the dish’s versatility. With just 10 minutes of prep time and a short roast in the oven, this recipe is as easy as it is impressive. Perfect as a complementary side for roasted meats, poultry, or vegetarian dishes, these onions will elevate any meal with their aromatic, herb-infused charm.
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Recipe Information
Ingredients
- 4 pieces medium yellow onions
- 3 tablespoons olive oil
- 2 sprigs fresh rosemary
- 1 teaspoon salt
- 0.5 teaspoon black pepper
- 1 tablespoon balsamic vinegar (optional)
Instructions
Preheat your oven to 400°F (200°C).
Peel the onions and slice them in half vertically (from top to bottom). If desired, trim the root end slightly, but leave enough of it intact to hold the layers together.
Place the onion halves, cut side up, in a baking dish or on a lined baking sheet.
Drizzle the olive oil evenly over the onions, ensuring they are well-coated to prevent drying out during roasting.
Carefully tuck the rosemary sprigs between the onion halves for even flavor distribution.
Sprinkle the onions with salt and black pepper to taste.
If desired, drizzle balsamic vinegar over the onions for a subtle tangy sweetness.
Place the onions in the preheated oven and roast for 35-40 minutes, or until the edges are caramelized and the onions are tender when pierced with a fork.
Remove the onions from the oven and let them rest for a few minutes. Discard the rosemary sprigs before serving.
Serve warm as a side dish to complement meats, poultry, or vegetarian mains.
Nutrition Facts
Calories |
572 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 42.4 g | 54% | |
| Saturated Fat | 6.5 g | 32% | |
| Polyunsaturated Fat | 4.0 g | ||
| Cholesterol | 0 mg | 0% | |
| Sodium | 2381 mg | 104% | |
| Total Carbohydrate | 44.9 g | 16% | |
| Dietary Fiber | 8.1 g | 29% | |
| Total Sugars | 21.1 g | ||
| Protein | 5.0 g | 10% | |
| Vitamin D | 0.0 mcg | 0% | |
| Calcium | 92 mg | 7% | |
| Iron | 1.7 mg | 9% | |
| Potassium | 682 mg | 15% | |
*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.
