Name: Baked Onions with Asiago Cheese
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American
Ingredients: 4 large yellow onions; 2 tablespoons unsalted butter; 1 tablespoon olive oil; 1 teaspoon salt; 1 teaspoon black pepper; 1 tablespoon chopped fresh thyme or parsley; 1 cup shredded Asiago cheese

Rich, cheesy, and unbelievably tender, these Baked Onions with Asiago Cheese are the kind of side dish that steals the show. Each onion slice is roasted until golden, soaking in savory buttery juices and crowned with a melty layer of sharp Asiago. This dish turns a humble vegetable into a luxurious, flavor-packed experience.

Whether you’re serving it alongside a steak dinner or adding a vegetarian star to your table, these baked onions deliver comfort and elegance in every bite. With minimal ingredients and prep, they make it easy to impress with very little effort.

Why You’ll Love This Baked Onion Recipe

These baked onions are simple yet flavorful, thanks to the natural sweetness of roasted onions and the bold nuttiness of Asiago cheese. They’re budget-friendly, low-effort, and look absolutely stunning when served. Plus, they’re naturally gluten-free and pair beautifully with so many mains.

What Kind of Onions Work Best for Baking?

Yellow onions are your best bet for this recipe. They caramelize beautifully and their mild sweetness pairs wonderfully with the cheese. You can use white onions for a milder flavor or red onions for a touch of tang and color, but yellow keeps things balanced and rich.

Ingredients for the Baked Onions with Asiago Cheese

Each ingredient in this dish adds depth, comfort, and flavor, so choose good-quality basics:

Yellow Onions: The star of the show. Their natural sugars caramelize in the oven, creating that sweet-savory magic.
Butter: Adds richness and helps the onions become tender and golden.
Olive Oil: Prevents burning and deepens the savory flavor.
Salt & Pepper: Essential for seasoning. Don’t be shy with the pepper.
Fresh Thyme (or parsley): A hint of freshness to balance the richness.
Asiago Cheese: Nutty, sharp, and gooey when melted—it’s what takes this from good to gourmet.

How To Make the Baked Onions with Asiago Cheese

Step 1: Prep the Onions

Slice your yellow onions into thick rounds, about 3/4 inch thick. Be gentle to keep the slices intact. Remove any loose outer skins.

Step 2: Season and Sear

In an oven-safe skillet, heat olive oil and a little butter over medium heat. Sear the onion rounds until golden brown on each side, about 2-3 minutes per side. Season with salt and pepper as they cook.

Step 3: Bake to Tenderness

Transfer the skillet to a 400°F (200°C) oven and bake for about 15-20 minutes. The onions should be soft, golden, and sitting in flavorful butter.

Step 4: Add the Asiago Cheese

Sprinkle shredded Asiago generously over the tops of each onion round. Return the skillet to the oven and broil for 2-4 minutes, until the cheese is bubbly and golden.

Step 5: Garnish and Serve

Top with chopped fresh thyme or parsley. Serve hot and melty!

How to Serve and Store Baked Onions with Asiago Cheese

This recipe makes enough for 4 generous servings as a side dish. Serve them fresh out of the oven for maximum gooey goodness. You can also make them ahead—just reheat in the oven at 350°F until warmed through (about 10 minutes).

To store: Place leftovers in an airtight container and refrigerate for up to 3 days. Reheat in the oven or microwave.

What to Serve With Baked Onions?

H3: Grilled Ribeye Steak

Juicy and rich—a perfect match for cheesy, caramelized onions.

H3: Herb-Crusted Pork Chops

The sharpness of Asiago complements the savory pork beautifully.

H3: Garlic Butter Roasted Chicken

Add a rustic touch to your weeknight roast dinner.

H3: Creamy Mashed Potatoes

Let the onions melt over fluffy potatoes for double comfort.

H3: Seared Salmon

The acidity in salmon balances out the richness of the cheese.

H3: Lentil Pilaf

Go vegetarian with a hearty and protein-packed pairing.

H3: Roasted Brussels Sprouts

Double up on roasted veggies with contrasting textures.

Want More Side Dish Ideas?

If you love this savory and cheesy dish, you’ll enjoy these other flavorful sides:

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📌 Save this recipe to your Pinterest board so you can revisit it anytime you crave something cozy and cheesy.

Let me know in the comments how yours turned out. Did you add bacon bits? Use a different cheese? I’m all ears!

Explore beautifully curated health-boosting meals and feel-good recipes on NoraNosh Recipes on Pinterest and discover new favorites every day.

Baked Onions with Asiago Cheese

Author: Nora
Total Time: 35 minutes
Yield: 4 servings
Diet: Vegetarian

Print Recipe

Description

Looking for a side dish that turns heads and melts in your mouth? These Baked Onions with Asiago Cheese are buttery, savory, and topped with golden, bubbly Asiago. With minimal ingredients and effort, this easy recipe is perfect for elevating weeknight dinners or impressing guests. It’s ideal for anyone who loves quick comfort food, healthy side dish ideas, or simple, baked veggie meals. Great for dinner ideas, holiday menus, or adding a cheesy twist to your meal prep.