Creamy Baked Onions with Asiago Cheese

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Golden, bubbling, and nestled in a blanket of velvety cream, these Creamy Baked Onions with Asiago Cheese are the ultimate comfort food. Sweet onions soften into silky layers while the sharp Asiago adds just the right amount of nutty bite. It’s the kind of dish that takes humble ingredients and turns them into a rich, elegant plate that’s worthy of any dinner table.

Whether you’re looking for a savory side dish, a vegetarian main, or a unique addition to your holiday spread, this recipe brings flavor and decadence without requiring hours in the kitchen. The cream thickens beautifully as it bakes, blending with melted Asiago into a sauce you’ll want to scoop up with crusty bread.

Why You’ll Love This Creamy Baked Onions with Asiago Cheese

If you’re a fan of roasted vegetables and cheese (who isn’t?), this dish is about to become a go-to favorite. It’s:

• Comforting and warm
• Easy to prepare with just a few ingredients
• Full of depth from caramelized onions and nutty Asiago
• A perfect blend of creamy, savory, and slightly sweet

This dish transitions effortlessly between weeknight dinners and special occasions. It’s as lovely paired with roast chicken as it is with a crisp green salad.

What Kind of Onions Should I Use?

For this dish, yellow or sweet onions are the best choice. They become tender and slightly sweet as they bake, and their natural sugars pair beautifully with the salty tang of Asiago. Avoid red onions as their flavor can become too bold in this preparation. You can also try shallots for a more delicate taste.

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Ingredients for the Creamy Baked Onions with Asiago Cheese

Each ingredient in this recipe plays a distinct role in building richness, texture, and flavor. Here’s what you need:

• Yellow onions – These soften beautifully and develop a natural sweetness during baking.
• Heavy cream – The creamy base that turns into a luscious sauce in the oven.
• Asiago cheese – Adds a nutty, slightly sharp bite that cuts through the richness.
• Olive oil or butter – For lightly browning the onions before baking, adding depth.
• Fresh thyme (or dried) – Introduces earthy, aromatic notes.
• Salt and pepper – Essential for balancing the flavors.
• Fresh parsley or chives – Optional, but great for garnishing and adding a fresh contrast.

How To Make the Creamy Baked Onions with Asiago Cheese

Step 1: Preheat and Prep

Preheat your oven to 375°F (190°C). Lightly grease a baking dish with butter or olive oil.

Step 2: Slice and Sauté the Onions

Peel and halve the onions, then slice them into thick rounds. In a skillet over medium heat, warm a little olive oil or butter and sauté the onions just until they begin to caramelize and soften (about 5–7 minutes).

Step 3: Arrange in the Baking Dish

Layer the sautéed onions into the baking dish, slightly overlapping. Tuck in sprigs of fresh thyme or sprinkle dried thyme evenly.

Step 4: Add Cream and Cheese

Pour heavy cream evenly over the onions. Sprinkle grated Asiago cheese generously across the top.

Step 5: Bake Until Golden

Bake uncovered for 25–30 minutes, or until the top is bubbly and golden brown. The cream should thicken, and the onions should be fork-tender.

Step 6: Garnish and Serve

Remove from the oven and let it rest for 5 minutes. Sprinkle with chopped parsley or chives before serving for a burst of color and freshness.

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How to Serve and Store Creamy Baked Onions with Asiago Cheese

This dish is incredibly versatile in how you serve it. As a side, it pairs beautifully with roasted meats or grilled vegetables. It also holds its own as a vegetarian main when served with a hearty grain or fresh salad. This recipe feeds about 4 people as a side dish, or 2 as a main course.

To store leftovers, let the dish cool completely, then transfer to an airtight container and refrigerate for up to 3 days. To reheat, warm in the oven at 350°F (175°C) until heated through. If the sauce thickens too much, just add a splash of cream or milk while reheating.

What to Serve With Creamy Baked Onions with Asiago Cheese?

Herb-Roasted Chicken

The rich, creamy onions complement the crisp, juicy chicken perfectly.

Grilled Steak

A hearty main like steak benefits from the mellow, cheesy sweetness of baked onions.

Garlic Mashed Potatoes

Together, these make for an ultra-cozy and indulgent plate.

Crusty Bread

Perfect for soaking up the creamy sauce at the bottom of the dish.

Roasted Root Vegetables

Add balance and color with carrots, parsnips, or beets roasted in olive oil.

Farro or Quinoa Salad

A fresh, nutty grain salad offsets the richness with texture and brightness.

Green Beans Almondine

The crisp, buttery green beans offer a nice contrast.

Baked Salmon

The gentle flavor of baked fish works wonderfully with creamy onions as a side.

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Frequently Asked Questions

Can I use a different cheese besides Asiago?
Absolutely! Parmesan, Gruyère, or even sharp white cheddar can be used as substitutes. Each offers a unique flavor, so feel free to experiment based on what you have.

Can this be made ahead of time?
Yes! You can prep the dish up until the baking step and refrigerate it for up to 24 hours. When you’re ready to serve, bake it straight from the fridge, adding 5–10 minutes to the cooking time.

Is this recipe gluten-free?
Yes, this dish is naturally gluten-free, making it great for guests with dietary restrictions—just double-check that your cheese and cream are gluten-free labeled.

What if I want to make it vegan?
You can swap out the cream for full-fat coconut milk or a plant-based heavy cream alternative, and use a dairy-free cheese. The flavor will differ but can still be delicious.

Save This Pin For Later

Save this recipe to your Pinterest comfort food 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 try a different cheese? Add garlic or a splash of white wine?
I love hearing how others bring their own twist to my recipes.

More recipes like this on my Pinterest: Meals We Share By Sally

Conclusion

Creamy Baked Onions with Asiago Cheese is the kind of dish that turns a simple vegetable into a showstopper. It’s warm, satisfying, and layered with flavor. Whether you’re making it for a holiday table, a cozy night in, or just to use up some extra onions, this recipe is bound to impress. Don’t forget to bookmark it—and check out more comforting creations on my Pinterest!

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