Baked Onions with Asiago Cheese

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Caramelized, golden, and bubbling with cheese, these Baked Onions with Asiago Cheese are the side dish you didn’t know you needed. They bring an irresistible combination of savory and sweet, with the natural sugars of slow-baked onions paired beautifully with the sharp nuttiness of Asiago cheese.

Perfect for family dinners, holiday gatherings, or even an unexpected addition to a weeknight meal, this recipe turns humble onions into something rich, satisfying, and crowd-pleasing. It’s minimal in ingredients but full in flavor, and once you try it, you might find yourself making it again and again.

Why You’ll Love This Baked Onion Recipe

This dish takes almost no prep and turns out incredibly impressive. The onions become tender and sweet in the oven, almost melting in your mouth, while the Asiago cheese crisps on top to create a golden, cheesy crust. Whether you’re serving it as a hearty side or the star of a meatless meal, it stands out with comforting flavors and a rustic feel.

What Kind of Onions Work Best for Baking?

Yellow onions are ideal for this recipe because they hold their shape and turn deliciously sweet as they roast. You can also use sweet Vidalia onions if you’re looking for an even milder, more sugary flavor. Red onions will work too, offering a deeper hue and slight tang, but steer clear of white onions, which tend to become too soft and sharp when baked.

Ingredients for the Baked Onions with Asiago Cheese

Onions and cheese make the core of this dish, but the right combination of seasoning and baking technique brings it all together.

• Yellow onions
• Asiago cheese
• Olive oil
• Salt
• Black pepper
• Fresh thyme (optional)

Yellow onions are essential for their ability to caramelize and sweeten during baking.

Asiago cheese brings bold, sharp flavor and a bubbly, browned top layer that contrasts beautifully with the soft onions.

Olive oil is used to coat the onions for roasting, encouraging browning and adding richness.

Salt and black pepper season the onions simply, letting their natural flavor shine.

Fresh thyme, if you have it, adds an aromatic layer that deepens the flavor and makes the dish feel extra special.

How To Make the Baked Onions with Asiago Cheese

Step 1: Preheat and Prepare

Preheat your oven to 400°F (200°C). Slice the onions horizontally into thick rings, about half an inch each, and lay them flat on a greased baking dish.

Step 2: Season the Onions

Drizzle olive oil over the onion slices, making sure they are well-coated. Sprinkle with salt, pepper, and fresh thyme if using.

Step 3: Bake the Onions

Bake the onions for about 25 minutes, or until they begin to soften and the edges are golden.

Step 4: Add Cheese and Finish Baking

Remove the onions from the oven and top each slice generously with grated Asiago cheese. Return to the oven for another 10 to 15 minutes, until the cheese is fully melted, bubbling, and slightly browned.

Step 5: Serve Warm

Let the onions cool slightly before serving. They are best enjoyed warm when the cheese is at its meltiest.

Serving and Storing These Cheesy Onions

These baked onions can feed 4 to 6 people as a side dish, depending on the size of your onions and serving portions. Serve them directly from the oven alongside grilled meats, roasted chicken, or pasta dishes. They also make an excellent vegetarian centerpiece with a side of crusty bread or grains.

To store leftovers, place the onions in an airtight container and refrigerate for up to 3 days. Reheat in the oven or toaster oven to regain that melty top and golden edges.

What to Serve With Baked Onions with Asiago Cheese?

Grilled Steak

The sweet and cheesy onions pair perfectly with the smokiness of a grilled ribeye or sirloin.

Herb Roasted Chicken

Simple, juicy chicken highlights the richness of the onions without competing with their flavor.

Creamy Polenta

Soft polenta is a fantastic base for these cheesy onions, turning them into a cozy vegetarian main.

Garlic Mashed Potatoes

For the ultimate comfort combo, spoon these onions over creamy, garlicky mashed potatoes.

Crispy Pork Chops

Add a touch of elegance and contrast to your pork chops with a cheesy, golden onion side.

Pasta Alfredo

This indulgent pairing layers flavors of cheese-on-cheese, with onion sweetness breaking through.

Crusty Sourdough Bread

Scoop the onions onto thick slices of toasted sourdough for a rustic appetizer or light lunch.

Want More Cheesy Side Dish Ideas?

If you love these Baked Onions with Asiago Cheese, you might also enjoy these mouthwatering recipes:

• Creamy Corn Dip when you’re in the mood for something scoopable and rich.
• Honey Butter Skillet Corn for a sweet-savory bite that melts in your mouth.
• Crispy Buttered Ranch Chicken to pair with these onions for a full comfort-food plate.
• Creamy Chicken and Broccoli as another crowd-pleasing side-meets-main.
• Cheeseburger Sliders with Hawaiian Rolls that match the cozy, cheesy theme.

Save This Recipe For Later

📌 Save this recipe to your Pinterest board so you can revisit it anytime you want to add a cozy and flavorful side to your meal.

And let me know in the comments how yours turned out. Did you add a different cheese? Maybe tried a blend? I’d love to hear what twist you gave it!

Explore even more feel-good dishes and cheesy favorites on Zoe Recipes on Pinterest. Whether you’re cooking for yourself or a crowd, there’s always something new to try.

Conclusion

Baked Onions with Asiago Cheese take simple ingredients and transform them into something special. Whether you’re looking to impress guests or treat yourself, this side dish offers a warm, cheesy hug on a plate. It’s versatile, affordable, and incredibly flavorful—everything you want in a go-to recipe.

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