If you’re on the hunt for a showstopping, soul-warming side that feels both nostalgic and elevated, look no further than these Asiago Creamy Baked Onions. This dish takes the humble onion and transforms it into something magical with layers of sweet, tender flesh wrapped in velvety cream and bubbling Asiago cheese. Whether you’re hosting a holiday feast or adding a bit of luxury to a weeknight meal, Asiago Creamy Baked Onions blend rich flavors that make you wonder why you haven’t tried baking onions before!

Asiago Creamy Baked Onions Recipe - Recipe Image

Ingredients You’ll Need

The joy of Asiago Creamy Baked Onions comes from its simplicity—each ingredient truly shines, from the sweetness of the onions to the bite of Asiago. Everything here has a purpose, whether it’s building creaminess, adding savory notes, or providing that irresistible golden finish on top.

Sweet onions (Vidalia or similar): Their mellow flavor softens beautifully in the oven and soaks up all the creamy goodness.
Unsalted butter: Melted butter creates the savory base for the sauce and helps everything blend smoothly.
Heavy cream: This is the backbone of that luscious, decadent sauce that bathes each onion.
Dijon mustard: A little goes a long way to add brightness and subtle tang to the richness.
Garlic powder: Delivers gentle, background warmth without overwhelming the other flavors.
Ground white pepper: Keeps the sauce creamy and fleck-free, with a mild, peppery bite.
Salt: Balances the sweet onions and brings all the flavors into focus.
Grated Asiago cheese, divided: Salty, nutty, and intensely flavorful—Asiago melts perfectly and forms that drool-worthy golden top.
Chopped fresh parsley (optional): For bright color and a touch of fresh herbal aroma at the end.

How to Make Asiago Creamy Baked Onions

Step 1: Prep Your Onions and Oven

Begin by preheating your oven to 375°F (190°C) and lightly greasing a medium baking dish—just a little butter or cooking spray does the trick. Peel the onions and cut them in half crosswise so each piece sits comfortably upright. Arrange the halves, cut-side up, in your prepared dish. This simple prep lets their natural sweetness bloom as they bake.

Step 2: Whip Up the Asiago Cream Sauce

In a small saucepan over medium heat, melt the unsalted butter until just foamy. Stir in the heavy cream, Dijon mustard, garlic powder, white pepper, and salt. Heat this mixture gently, just until it starts to simmer—the kitchen will begin to smell fantastic! Remove it from the heat and whisk in 1/2 cup of grated Asiago cheese until everything’s melted and the sauce is silky smooth.

Step 3: Drench, Cover, and Start Baking

Pour that gorgeous Asiago cream sauce evenly over each onion half, making sure they’re completely nestled in the sauce and ready to soak up all the goodness. Cover the dish tightly with foil and slide it into your hot oven. Bake for 35 to 40 minutes until the onions are tender when poked with a fork—they should almost melt at the touch.

Step 4: Cheese It and Finish Baking

Here’s where Asiago Creamy Baked Onions truly come to life: remove the foil, sprinkle the remaining 1/4 cup Asiago cheese generously over the top, and return the dish to the oven uncovered. Bake for another 10 to 15 minutes, or until the cheese is bubbly, deep golden, and calling your name.

Step 5: Rest and Garnish

Let the dish rest for about five minutes out of the oven—this helps the sauce thicken slightly and makes serving neater. Just before delivering to the table, scatter with chopped fresh parsley for a burst of color and a little herbal lift, if you like.

How to Serve Asiago Creamy Baked Onions

Garnishes

For a fresh pop and visual appeal, a sprinkle of chopped parsley is classic. If you want to switch things up, try some minced chives or a dusting of extra Asiago right before serving for that irresistible cheesy aroma that makes everyone swoon.

Side Dishes

These Asiago Creamy Baked Onions are absolute stars next to roasted meats like pork loin, chicken, or even your holiday ham. For a meatless pairing, serve them with herby rice, risotto, or a platter of oven-charred vegetables—all of which soak up the extra sauce so nothing goes to waste.

Creative Ways to Present

If you’re feeling playful, spoon the onions into individual ramekins for a bistro-style appetizer. They’re also perfect as a topping for crusty bread or heaped over a baked potato for the ultimate indulgent twist. However you serve them, watch your guests’ faces light up!

Make Ahead and Storage

Storing Leftovers

Got leftovers? Simply let the Asiago Creamy Baked Onions cool to room temperature, then transfer to an airtight container. They’ll keep in the fridge for up to three days, making weeknight meals even more exciting.

Freezing

These onions can actually be frozen! Once cooled, place portions in freezer-safe containers and store for up to two months. When you’re ready to enjoy, thaw overnight in the fridge for the best texture.

Reheating

To reheat, place the onions in an oven-safe dish, cover loosely with foil, and warm in a 325°F oven for about 20 minutes, or until heated through. For microwave lovers, a couple of minutes on medium power works well—just pause and stir gently to keep the sauce creamy.

FAQs

Can I use a different type Side Dish

Absolutely! While sweet onions like Vidalia are traditional in Asiago Creamy Baked Onions because of their natural sweetness, yellow or white onions also work beautifully—they’ll just have a slightly stronger flavor.

Is it possible to make this dish ahead of time?

Yes, you can assemble the entire dish (up to adding the first round of cheese) a day in advance. Simply cover tightly and refrigerate, then bake as usual, adding a few extra minutes to the covered baking time if starting from cold.

What’s the best way to get a really golden cheesy topping?

For extra golden color, you can broil the dish for 2 to 3 minutes at the end, watching carefully so the cheese doesn’t burn—this step intensifies the nutty aroma of the Asiago.

Can I add other herbs or spices?

Definitely! While the classic version is all about the creamy-cheesy interplay, a little thyme, rosemary, or a pinch of smoked paprika can add a delightful modern twist to Asiago Creamy Baked Onions.

Is this dish vegetarian?

Yes, Asiago Creamy Baked Onions are vegetarian-friendly as written. Just be sure your Asiago cheese is made with vegetarian rennet if that’s important for your dietary needs.

Final Thoughts

If you’re ready to impress or simply treat yourself, don’t wait to try Asiago Creamy Baked Onions. Their savory warmth, creamy sauce, and bubbly cheese make them instantly memorable. Make them once, and you’ll find every excuse to bake up another batch—promise!

Asiago Creamy Baked Onions Recipe

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4.7 from 7 reviews

Author: admin
Total Time: 1 hour 5 minutes
Yield: 6 servings 1x
Diet: Vegetarian

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Description

Indulge in the creamy, cheesy goodness of these Asiago Creamy Baked Onions. Sweet onions bathed in a luscious cream sauce with hints of Dijon mustard and garlic, topped with a blanket of melted Asiago cheese. A perfect side dish for any occasion.

Ingredients

Scale

Onions:

4 large sweet onions (such as Vidalia), peeled and halved crosswise

Cream Sauce:

2 tablespoons unsalted butter
1 cup heavy cream
1 teaspoon Dijon mustard
1/2 teaspoon garlic powder
1/4 teaspoon ground white pepper
1/2 teaspoon salt
3/4 cup grated Asiago cheese, divided

Garnish:

2 tablespoons chopped fresh parsley (optional for garnish)

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Instructions

Preheat the oven: Preheat the oven to 375°F (190°C) and grease a medium baking dish.
Prepare onions: Arrange onion halves cut-side up in the dish.
Make cream sauce: Melt butter in a saucepan, add cream, Dijon mustard, garlic powder, white pepper, salt. Simmer, then stir in 1/2 cup Asiago until smooth.
Coat onions: Pour cream mixture over onions, cover with foil, and bake for 35–40 minutes until tender.
Add cheese: Sprinkle remaining 1/4 cup Asiago over onions, bake uncovered for 10–15 minutes until golden.
Serve: Rest for 5 minutes, garnish with parsley if desired.