Nutrition Facts for Roast onions

Roast Onions

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.

Nutriscore Rating: 74/100
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Image of Roast Onions
Prep Time:10 mins
Cook Time:45 mins
Total Time:55 mins
Servings: 4

Ingredients

  • 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)

Directions

Step 1

Preheat your oven to 400°F (200°C).

Step 2

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

Step 3

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

Step 4

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

Step 5

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

Step 6

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

Step 7

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

Step 8

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

Step 9

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

Nutrition Facts

Serving size (652.1g)
Amount per serving % Daily Value*
Calories 510.1
Total Fat 28.4g 0%
Saturated Fat 4.4g 0%
Polyunsaturated Fat 2.7g
Cholesterol 0mg 0%
Sodium 2388.7mg 0%
Total Carbohydrate 59.7g 0%
Dietary Fiber 10.9g 0%
Total Sugars 29.5g
Protein 7.0g 0%
Vitamin D 0IU 0%
Calcium 159.4mg 0%
Iron 1.6mg 0%
Potassium 873.6mg 0%
*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

Fat: 48.9%
Protein: 5.4%
Carbs: 45.7%