Baked Onions With Balsamic Vinegar
Sweet baked onions infused with balsamic vinegar and Dijon mustard develop rich flavors, perfect as a savory side dish for gatherings or cozy family dinners.
Ingredients
Instructions
- Cut off the roots and stem ends of the onions.
- Make a deep 'X' on top of each onion, cutting halfway down.
- Place each onion on a 6 x 6-inch piece of aluminum foil with the 'X' up.
- Bring up the corners of each foil square.
- Top each with 1 teaspoon of olive oil.
- Twist the foil tightly to enclose the onions completely.
- Place the wrapped onions on a large baking sheet with the twist side up.
- Bake at 350°F (175°C) for 40 minutes until tender.
Tips & Substitutions
For extra flavor, consider adding herbs like thyme or rosemary to the onions before wrapping them in foil. If you don’t have balsamic vinegar, a mix of red wine vinegar and a touch of sugar can serve as a substitute. Make sure the foil is tightly sealed to trap the steam, ensuring the onions cook evenly and become tender.
Serving Suggestions
Serve the baked onions as a side dish alongside grilled meats or roasted vegetables for a delightful meal. They pair beautifully with Pineapple Glazed Ham, complementing the sweetness of the dish. For a complete experience, consider serving with crusty bread to soak up the flavorful juices.
Storage & Reheating
Leftover baked onions can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, place the onions in a covered baking dish at 350°F (175°C) for about 15-20 minutes or until warmed through, adding a drizzle of olive oil if desired to enhance moisture.
Nutrition & Diet Analysis (per serving)
Each serving of Baked Onions With Balsamic Vinegar contains roughly 44 calories, with 2g protein, 8g carbohydrates, and 1g fat. It is an excellent source of vitamin C (93% of the Daily Value), and a good source of dietary fiber. It also contributes 4g of dietary fiber toward your daily target.
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I use other types of onions for this recipe?
Yes, while Vidalia or Texas sweet onions are recommended for their sweetness, you can experiment with other onion varieties like yellow or red onions. Just keep in mind that the flavor profile may change slightly, with red onions being sharper and yellow onions more savory.
How do I know when the onions are done baking?
The onions are done when they are tender and easily pierced with a fork. If you find they need more time, check them every 5 minutes until they reach the desired softness. The baking time may vary slightly based on the size of the onions used.
Can I prepare these onions in advance?
Absolutely! You can prepare the onions and wrap them in foil a day ahead of time. Just keep them in the refrigerator until you're ready to bake. This is a great time-saver if you're planning a meal or gathering.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).