Description

Craving something savory, cheesy, and effortlessly delicious? These Baked Onions with Asiago Cheese are a standout side dish or appetizer that’s as simple as it is satisfying. Sweet onions are slow-roasted to caramelized perfection, then topped with golden, bubbling Asiago cheese for a rich and indulgent finish. Whether you’re looking for easy dinner ideas, a quick vegetarian side, or a comfort food recipe that’s gluten-free and low-carb, this dish checks every box. Perfect for both casual meals and special occasions!

Ingredients

4 large sweet onions

1 ½ cups freshly grated Asiago cheese

2 tablespoons unsalted butter

¼ cup low-sodium vegetable or chicken broth

1 tablespoon olive oil

Salt to taste

Freshly ground black pepper to taste

1 teaspoon fresh thyme or rosemary *(optional)*

1 garlic clove finely minced *(optional)*

Chopped fresh parsley for garnish *(optional)*

Pinch of crushed red pepper flakes *(optional)*

Instructions

1. Preheat your oven to 400°F (200°C). Grease a cast iron skillet or baking dish with olive oil and pour in the broth.

2. Peel the onions and slice into ¾ to 1-inch thick rounds, keeping the rings intact.

3. Place each onion slice flat into the pan.

4. Drizzle with olive oil and season generously with salt and pepper. Add butter pieces on top of and around the onions.

5. Cover the dish loosely with foil and bake for 25–30 minutes until the onions start to soften.

6. Remove foil and top each onion slice with freshly grated Asiago cheese.

7. Bake uncovered for another 15–20 minutes, until the cheese is bubbly and the onions are tender.

8. Broil for 2–3 minutes at the end if a crisp golden top is desired. Watch closely.

9. Garnish with chopped parsley or fresh herbs and serve hot.

Notes

Use freshly grated Asiago cheese for best melt and flavor — skip the pre-shredded stuff.

Sweet onions like Vidalia or Walla Walla work best due to their high natural sugar content.

Let the onions rest for 5 minutes after baking to set and absorb the cheesy juices.

Prep Time: 10 minutes
Cook Time: 45 minutes
Category: Side Dish
Method: Baked
Cuisine: American

Nutrition

Serving Size: 1 onion slice
Calories: 190
Sugar: 5g
Sodium: 290mg
Fat: 14g
Saturated Fat: 7g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 10g
Fiber: 2g
Protein: 6g
Cholesterol: 25mg

Keywords: baked onions, Asiago cheese recipe, vegetarian side dish, easy dinner, low carb, comfort food