Baked Onions with Asiago Cheese

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Golden, tender, and bubbling with cheesy goodness, Baked Onions with Asiago Cheese are the unsung hero of any comfort food spread. This simple yet elegant dish transforms everyday onions into sweet, caramelized bites topped with melted Asiago cheese that adds a nutty, salty punch. Perfect as a side or even a vegetarian main, it’s a recipe that surprises with every creamy forkful.

As the onions roast in a buttery broth, their sharpness softens and sweetness intensifies, creating a naturally rich flavor. The Asiago crisps and browns on top, giving a savory finish that’s irresistibly satisfying. Whether you’re entertaining guests or treating yourself, this recipe feels indulgent but couldn’t be easier to make.

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What Kind of Onions Should I Use?

For best results, choose large yellow or sweet onions. These types mellow beautifully in the oven, becoming soft and candy-like while still holding their shape. Red onions can work if you prefer a sharper bite, but sweet varieties balance better with the nutty cheese.

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Ingredients for the Baked Onions with Asiago Cheese

Yellow or Sweet Onions – The base of the dish, bringing sweetness and body after roasting.

Butter – Adds richness and helps soften and brown the onions.

Vegetable or Chicken Broth – Used to baste and keep the onions tender during baking.

Garlic Powder & Italian Seasoning – Infuse the dish with aromatic depth.

Asiago Cheese – Melts into a golden, flavorful crust that makes these onions stand out.

Fresh Parsley (optional) – A final sprinkle adds brightness and color.

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How To Make the Baked Onions with Asiago Cheese

Step 1: Prep the Onions

Peel your onions and slice off both ends so they sit flat. Slice them in half horizontally. Remove a few inner layers if you’d like space for more cheese in the center.

Step 2: Butter and Broth Base

Place the onion halves in a baking dish, cut side up. Add a pat of butter on top of each. Pour broth around the onions to cover the bottom of the dish. This keeps the onions moist as they roast.

Step 3: Season Generously

Sprinkle garlic powder and Italian seasoning over each onion half. Add salt and pepper to taste. Let the flavors absorb into the onions.

Step 4: Bake Until Tender

Cover with foil and bake at 375°F (190°C) for 40 minutes. Uncover, then top each onion with grated Asiago cheese and bake another 15-20 minutes until cheese is golden and bubbly.

Step 5: Garnish and Serve

Sprinkle with chopped parsley just before serving for a pop of color. Serve warm with crusty bread or alongside grilled meats.

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How to Serve and Store Baked Onions with Asiago Cheese

These onions make a wonderful side for roasted meats, creamy pastas, or grilled vegetables. Serve them warm out of the oven with a drizzle of the buttery broth spooned over the top.

To store leftovers, place the cooled onions in an airtight container and refrigerate for up to 3 days. Reheat in a covered dish at 350°F (175°C) until warmed through. You can also microwave individual portions.

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Frequently Asked Questions

How do I keep the onions from falling apart?

Use large, firm onions and avoid slicing them too thin. Keeping the root end partially intact helps hold the layers together.

Can I make this ahead of time?

Yes! Bake the onions up to the first covered bake step. Refrigerate and finish with cheese and the second bake just before serving.

What other cheese can I use?

Parmesan, Gruyère, or even sharp white cheddar work well if Asiago isn’t available.

Can this be a vegetarian dish?

Absolutely. Just use vegetable broth instead of chicken.

Do I have to peel the onions completely?

Yes, you should remove the papery outer layers, but keep enough of the base to hold the onion together.

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Want More Savory Side Dish Ideas?

If these Baked Onions with Asiago Cheese hit the spot, you’ll love exploring more comforting and creative recipes like these:

• Garlic Parmesan Beef Spaghetti Pasta for a hearty pasta dinner.
• Crockpot Cheese Tortellini and Sausage for a rich, slow-cooked flavor.
• Honey Butter Skillet Corn to bring a sweet and savory twist to your table.
• Garlic Butter Chicken with Creamy Ricotta Alfredo Pasta when you want creamy comfort food.
• Cheesy Baked Tennessee Onions Recipe for another cheesy onion delight.

Looking for even more inspiration? Head over to my Pinterest board where I share daily recipes packed with flavor and creativity!

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Save This Pin + Share Your Results

📌 Save this recipe to your Pinterest dinner or side dish board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you add your own twist with extra herbs or a different cheese?

I love seeing how others make these recipes their own. Questions are always welcome too—let’s cook and inspire together!

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