The Magic of Roasted Onions in a Salad!
Ever thought a salad starring onions could be the most delicious thing on the table? Get ready to be amazed! This isn’t just any salad; it’s a celebration of the incredible transformation that happens when you slow-roast members of the allium family. Sharp, pungent onions, shallots, and garlic mellow into something deeply sweet, jammy, and utterly irresistible.
We pair these beautifully caramelized gems with a bed of feisty, peppery arugula and a simple, tangy balsamic drizzle. The contrast is electric—sweet meets bitter, tender meets crisp. It’s a sophisticated yet wonderfully easy dish that requires very little hands-on time. Perfect for a light lunch, a stunning side, or a potluck showstopper!
Ingredients
• For the Roasted Alliums
• 2 medium to large red onions, peeled, roots on, halved vertically
• 2 medium to large white onions, peeled, roots on, halved vertically
• 8 scallions, trimmed
• 8 shallots, peeled, roots on
• 8 large cloves garlic, peeled
• 5-6 sprigs fresh thyme
• 1/4 cup / 60 ml extra virgin olive oil
• Salt and freshly ground black pepper, to taste
• For the Salad & Dressing
• 4 cups / 120 g arugula or watercress
• 1/4 teaspoon minced raw garlic
• 2 tablespoons / 30 ml extra virgin olive oil
• 2 tablespoons / 30 ml good-quality balsamic vinegar
Instructions
1. Preheat your oven to 375°F (190°C). In a large roasting pan or casserole dish, combine the red onions, white onions, scallions, shallots, whole garlic cloves, and thyme sprigs. Drizzle with 1/4 cup of olive oil, season generously with salt and pepper, and toss everything to coat.
2. Cover the pan tightly with foil or a lid and roast for 30 minutes, shaking the pan once or twice, until the vegetables are becoming tender.
3. Remove the foil, increase the oven temperature to 425°F (220°C), and continue to roast for another 15-20 minutes. Stir occasionally, until the vegetables are very tender, deeply caramelized, and starting to brown at the edges.
4. Remove from the oven and let the vegetables cool to room temperature in the pan. This can be done up to 2 days in advance; just cover and refrigerate, then bring to room temperature before serving.
5. To assemble, gently toss the cooled roasted vegetables with the minced raw garlic. Arrange the arugula on a platter and create a mound of the roasted alliums in the center. Drizzle with the remaining 2 tablespoons of olive oil and the balsamic vinegar. Toss lightly, taste and adjust seasoning if needed, and serve immediately.
Nutritional Information
• (per serving)
• Calories: 175 kcal
• Carbohydrates: 15 g
• Protein: 2 g
• Fat: 12 g
• Sodium: 150 mg
• Fiber: 3 g
Pro Tips
• Mix and Match Alliums: Don’t feel tied to this exact list! Use any combination of onions, leeks, shallots, or even whole heads of garlic for a unique flavor profile every time.
• Make-Ahead Magic: Roast the vegetables up to two days in advance. Store them in an airtight container in the fridge and bring to room temperature before assembling the salad for a quick and impressive dish.
• Don’t Skip the Bitter Greens: The peppery bite of arugula or watercress is essential to cut through the sweetness of the roasted onions. If you’re not a fan, try radicchio or endive for a similar balancing effect.
• Cheese, Please: For a richer salad, crumble some feta, goat cheese, or shaved Parmesan over the top just before serving. The salty, creamy notes are a fantastic addition.
FAQ
Q: How can I add protein to this vegetarian salad
A: To make this a more substantial vegetarian meal, add a source of plant-based protein. Roasted chickpeas, toasted walnuts or pecans, or a sprinkle of hemp seeds would be delicious. For a non-vegan option, crumbled feta or goat cheese as suggested in the pro tips also adds protein and a lovely salty flavor.
Q: Is this roasted onion salad recipe vegan
A: Yes, this recipe is naturally vegan as written. It uses only plant-based ingredients like onions, olive oil, and balsamic vinegar. If you choose to add cheese for extra richness, be sure to use a vegan feta or parmesan alternative to keep the entire dish vegan.
Q: Can I meal prep this roasted onion salad
A: Absolutely! This salad is perfect for vegetarian meal prep. Roast the onions, shallots, and garlic up to 2 days in advance and store them in an airtight container in the refrigerator. When you’re ready to eat, simply bring them to room temperature and toss with fresh arugula and the dressing for a quick and delicious meal.
Q: What can I serve with this salad to make it a full vegetarian meal
A: To turn this into a complete vegetarian dinner, serve it alongside a hearty grain like quinoa or farro. It also pairs beautifully with a simple lentil soup, a slice of crusty whole-wheat bread for dipping, or a side of creamy white beans for added fiber and protein.
