Nutrition Facts for Roast onions
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Roast Onions

Image of Roast Onions
Nutriscore Rating: 78/100

Transform simple onions into a show-stopping side dish with this easy recipe for Roast Onions. Featuring caramelized edges, tender centers, and a subtle infusion of olive oil, this recipe elevates the natural sweetness of yellow, white, or red onions. The optional addition of balsamic vinegar lends a tangy depth, while fresh thyme adds a fragrant, herbaceous touch. With just 10 minutes of prep and a perfectly roasted finish in under an hour, these golden-brown onions are an effortless yet elegant accompaniment to roasts, salads, or grain bowls. Perfect for weeknight dinners or holiday spreads, this recipe is gluten-free, vegetarian, and irresistibly versatile.

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Recipe Information

⏱️
Prep Time
10 min
🔥
Cook Time
45 min
🕐
Total Time
55 min
👥
Servings
4 servings
📊
Difficulty
Medium

🥘 Ingredients

6 items
  • 4 pieces Large onions (yellow, white, or red)
  • 2 tablespoons Olive oil
  • 1 teaspoon Salt
  • 0.5 teaspoons Black pepper
  • 1 tablespoon Balsamic vinegar (optional)
  • 2 sprigs Fresh thyme (optional)
💡
Pro Tip: Read through all ingredients before starting to cook!

📝 Instructions

9 steps
1

Preheat your oven to 400°F (200°C).

2

Peel the onions, trim the bottoms slightly to create a flat base, and cut each onion in half from root to tip.

3

Drizzle a baking dish or sheet pan with 1 tablespoon of olive oil to lightly coat the surface.

4

Place the onion halves cut-side up in the baking dish and drizzle with the remaining 1 tablespoon of olive oil.

5

Sprinkle the onions with salt and black pepper, ensuring even distribution.

6

If using, drizzle the onions with balsamic vinegar for added flavor and place the fresh thyme sprigs on top or alongside the onions.

7

Cover the dish tightly with aluminum foil and roast in the oven for 25 minutes to allow the onions to soften.

8

Remove the foil and roast uncovered for an additional 20 minutes, or until the onions are golden brown and caramelized around the edges.

9

Remove the onions from the oven and let them cool slightly before serving as a side dish or topping for your favorite meals.

Cooking Tip: Take your time with each step for the best results!
154
cal
2.6g
protein
21.9g
carbs
6.9g
fat

Nutrition Facts

1 serving (237.5g)
Calories
154
% Daily Value*
Total Fat 6.9 g 9%
Saturated Fat 1.0 g 5%
Polyunsaturated Fat 0.0 g
Cholesterol 0 mg 0%
Sodium 495 mg 22%
Total Carbohydrate 21.9 g 8%
Dietary Fiber 4.0 g 14%
Total Sugars 10.7 g
Protein 2.6 g 5%
Vitamin D 0.0 mcg 0%
Calcium 60 mg 5%
Iron 0.5 mg 3%
Potassium 325 mg 7%

*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.

Source of Calories

54.5%%
6.6%%
38.9%%
Fat: 249 cal (38.9%%)
Protein: 42 cal (6.6%%)
Carbs: 349 cal (54.5%%)