Name: Roasted Onion, Garlic, and Rosemary
Prep time: 10 min
Cook time: PT-487316H41M28S
Total time: PT-487316H41M28S
Cuisine: American
Ingredients: 2 large onions, peeled and sliced into wedges; 6-8 garlic cloves, peeled and left whole; 2 tablespoons olive oil; 2-3 sprigs fresh rosemary (or 1 teaspoon dried rosemary); Salt and pepper, to taste; 1 tablespoon balsamic vinegar (optional, for a touch of sweetness and tang)

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Roasted Onion, Garlic, and Rosemary is a simple yet flavorful side dish or accompaniment that’s perfect for a variety of meals. The sweet, caramelized onions, aromatic garlic, and earthy rosemary come together beautifully when roasted, creating a fragrant and savory dish. The slow roasting process enhances the natural sweetness of the onions and garlic while infusing them with the woodsy flavor of rosemary. This dish can be served as a side, used in pasta, added to sandwiches, or mixed into soups and stews for added depth.

Why You’ll Love This Recipe

This Roasted Onion, Garlic, and Rosemary is an incredibly easy dish to prepare, yet it’s bursting with bold flavors. The natural sweetness of the onions is intensified through roasting, while the garlic becomes soft, buttery, and aromatic. The rosemary adds a fragrant, earthy note that perfectly complements the sweetness of the onions and garlic. It’s a versatile dish that can elevate many meals, from meats to vegetables or grains. Plus, it only takes about 30 minutes to prepare!

Roasted Onion, Garlic, and Rosemary

Ingredients

2 large onions, peeled and sliced into wedges
6-8 garlic cloves, peeled and left whole
2 tablespoons olive oil
2-3 sprigs fresh rosemary (or 1 teaspoon dried rosemary)
Salt and pepper, to taste
1 tablespoon balsamic vinegar (optional, for a touch of sweetness and tang)

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

Directions

Preheat the Oven:
- Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or a silicone baking mat for easy cleanup.
Prepare the Vegetables:
- Slice the onions into wedges or rings, depending on your preference.
- Peel the garlic cloves but leave them whole. They will soften and caramelize beautifully as they roast.
Season the Vegetables:
- Place the onion wedges and garlic cloves on the prepared baking sheet. Drizzle with olive oil and toss to coat evenly.
- Sprinkle with salt, pepper, and the rosemary (either whole sprigs or chopped if using dried rosemary). Toss again to distribute the seasoning.
Roast the Vegetables:
- Roast in the preheated oven for about 25-30 minutes, or until the onions are golden brown and tender, and the garlic has softened and caramelized. Stir the vegetables halfway through to ensure even roasting.
Finish and Serve:
- Once the vegetables are done, remove them from the oven. If desired, drizzle with balsamic vinegar for an extra layer of flavor and sweetness.
- Serve immediately as a side dish, or use them to top pasta, in sandwiches, or as a topping for meats.

Servings and Timing

This recipe makes about 4 servings and takes approximately 10 minutes of prep time and 25-30 minutes of roasting time, making it a quick and easy side dish.

Variations

Add Vegetables: You can easily add other vegetables to the mix, such as carrots, bell peppers, or zucchini, for added texture and flavor.
Sweetness: If you prefer a sweeter touch, try adding a drizzle of honey or maple syrup before roasting to enhance the caramelization.
Add Lemon: For a fresh, zesty contrast, squeeze some fresh lemon juice over the roasted onions and garlic just before serving.
Make it Spicy: Add a pinch of red pepper flakes to the seasoning for a subtle kick.

Storage/Reheating

Storage: Store leftover roasted onions, garlic, and rosemary in an airtight container in the refrigerator for up to 3 days.
Reheating: Reheat in the microwave or in the oven at 350°F (175°C) for 5-7 minutes, or until warmed through.

FAQs

Can I use frozen onions for this recipe?

Fresh onions work best for roasting, as they caramelize and become tender. Frozen onions may not achieve the same texture and flavor.

Can I use dried rosemary instead of fresh?

Yes, dried rosemary can be used, but fresh rosemary will provide a more aromatic and vibrant flavor. If using dried rosemary, reduce the amount to 1 teaspoon to avoid overpowering the dish.

Can I make this recipe ahead of time?

Yes, you can roast the onions, garlic, and rosemary ahead of time and store them in the fridge for up to 3 days. Reheat them before serving or use them in other dishes like soups or stews.

What can I serve with roasted onions, garlic, and rosemary?

This dish pairs well with roasted meats, grilled chicken, pasta, or grains like rice and quinoa. You can also serve it on its own as a flavorful side or topping.

How can I make this dish more flavorful?

You can experiment by adding a splash of balsamic vinegar, a sprinkle of Parmesan cheese, or even fresh thyme or oregano for an extra flavor boost.

Conclusion

Roasted Onion, Garlic, and Rosemary is a simple, savory dish that brings out the natural sweetness of onions and the rich, aromatic flavors of garlic and rosemary. It’s an incredibly versatile side dish that can be enjoyed in countless ways, from accompanying meats to being tossed in pasta or spread on toasted bread. With minimal ingredients and effort, this recipe delivers big flavors that will elevate any meal. Enjoy every delicious bite!