Roasted Onions

Why You’ll Love This Recipe

Roasted onions are a simple yet flavorful side dish that brings out the natural sweetness and depth of flavor in onions. With just a few ingredients and minimal prep, these tender, caramelized onions make the perfect accompaniment to meats, grains, or other roasted vegetables. Their golden, slightly crisp edges and rich, mellow taste will elevate any meal.

ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

yellow onionsolive oilsaltblack pepperfresh thyme or rosemary (optional)balsamic vinegar (optional, for extra depth)

directions

Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.

Peel the onions and slice them into thick rounds or wedges, depending on your preference.

Place the onions on the baking sheet and drizzle generously with olive oil.

Season with salt, black pepper, and fresh herbs if using.

Toss gently to coat all pieces evenly.

Roast in the preheated oven for 30-40 minutes, turning once halfway through, until the onions are golden brown and tender.

For a deeper flavor, drizzle with a bit of balsamic vinegar during the last 5 minutes of roasting.

Remove from the oven and let them cool slightly before serving.

Servings and timing

This recipe serves 4.Preparation time: 10 minutesRoasting time: 30-40 minutesTotal time: 40-50 minutes

Variations

Use red onions for a sweeter, more colorful variation.

Add a pinch of chili flakes for a touch of heat.

Roast with garlic cloves or shallots for a flavor boost.

Top with grated Parmesan right before serving for a savory finish.

Mix with roasted bell peppers or carrots for a vibrant medley.

storage/reheating

Store roasted onions in an airtight container in the refrigerator for up to 4 days.Reheat in a skillet over medium heat or in the oven at 350°F (175°C) until warmed through.Avoid microwaving for too long as they can become mushy.

FAQs

What type of onions work best?

Yellow onions are ideal for roasting due to their balance of sweetness and sharpness.

Can I roast onions with the skin on?

It’s best to peel them before roasting for proper caramelization.

Can I roast them whole?

Yes, but it will take longer—up to 1 hour or more depending on size.

Do I need to use herbs?

No, but fresh herbs add a nice aromatic touch.

Are roasted onions healthy?

Yes, they’re naturally low in calories and rich in antioxidants and fiber.

Can I make them ahead of time?

Absolutely, they reheat well and can be made a day in advance.

Why are my onions burning?

Reduce the oven temperature or cover them loosely with foil if they brown too quickly.

Can I freeze roasted onions?

Yes, they freeze well and can be used in soups, stews, or pasta later.

How thick should I cut the onions?

About ½ to ¾ inch thick for rounds or wedges is ideal.

Can I use flavored oil?

Yes, garlic or herb-infused oils can enhance the flavor even more.

Conclusion

Roasted onions are an easy and delicious way to bring out the natural sweetness and rich flavor of this everyday vegetable. Whether served on their own or alongside other dishes, they add a comforting, savory note that enhances any meal. Try them once and they might just become your new go-to side dish.

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