Baked Whole Onions

Delightfully simple yet packed with flavor, these **Baked Whole Onions** are the perfect addition to elevate your dinner table. Slow-roasted to tender perfection, the onions develop a rich, caramelized sweetness that pairs beautifully with a touch of butter, olive oil, and optional fresh thyme. With minimal prep time and just a handful of pantry staples, this recipe is a true celebration of rustic charm and wholesome goodness. For an extra burst of flavor, finish with a drizzle of balsamic vinegar before serving. Whether enjoyed as a savory side dish or a standout component in a vegetable platter, these oven-baked onions are sure to impress. Perfect for cozy dinners or entertaining guests, they’re a versatile and elegant option for any occasion.

Nutriscore Rating: 67/100

Prep Time:10 mins

Cook Time:60 mins

Total Time:70 mins

Servings: 4

Ingredients

• 4 pieces large yellow onions
• 4 tablespoons unsalted butter
• 2 tablespoons olive oil
• 4 sprigs fresh thyme (optional)
• 1 teaspoon coarse salt
• 0.5 teaspoons freshly ground black pepper
• 1 teaspoon balsamic vinegar (optional)

Directions

Step 1

Preheat your oven to 375°F (190°C).

Step 2

Peel the onions, making sure to keep their root ends intact so they hold together during baking.

Step 3

Cut a small slice from the bottom of each onion so they sit flat, and carve out a shallow 1-inch-deep well on the top of each onion using a knife or melon baller.

Step 4

Place the onions in a baking dish, ensuring they are standing upright.

Step 5

Place 1 tablespoon of butter into the well of each onion.

Step 6

Drizzle the onions evenly with olive oil and sprinkle with coarse salt and black pepper.

Step 7

If using, tuck a sprig of fresh thyme into the well of each onion or scatter thyme sprigs around the baking dish.

Step 8

Cover the baking dish tightly with aluminum foil and bake in the preheated oven for 45 minutes.

Step 9

Remove the foil and bake uncovered for an additional 15 minutes, or until the onions are soft and caramelized on the outside.

Step 10

For extra flavor, drizzle the onions with balsamic vinegar before serving, if desired.

Step 11

Serve the onions warm as a side dish with your favorite main course or as part of a vegetable platter.

Nutrition Facts

Serving size	698.7 grams (698.7g)

Amount per serving	% Daily Value*
Calories	908

Total Fat 76.80g	98%
Saturated Fat 32.30g	161%
Polyunsaturated Fat 2.70g
Cholesterol 124mg	41%
Sodium 2242mg	97%
Total Carbohydrate 57.60g	21%
Dietary Fiber 10.80g	39%
Total Sugars 27.90g
Protein 7.20g	14%

Vitamin D 0IU	0%
Calcium 166mg	13%
Iron 1mg	8%
Potassium 958mg	20%

*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: 72.7%

Protein: 3.0%

Carbs: 24.2%