Description
Elevate your side dish game with this Baked Onions with Asiago Cheese recipe—a delicious twist on a humble vegetable that turns into a show-stopping dish. Thick slices of sweet or yellow onions are basted with garlic butter, slowly roasted until tender, then crowned with golden, bubbling Asiago cheese. It’s perfect for a cozy easy dinner, a fancy side for holiday meals, or even a quick vegetarian main. This easy recipe is rich, comforting, and packed with flavor—one of the best dinner ideas to keep in your rotation. Whether you’re looking for food ideas for guests or healthy snack alternatives packed with flavor, this dish delivers in every way.
Ingredients
4 large yellow or sweet onions
3 tablespoons unsalted butter
2 tablespoons olive oil
2 garlic cloves, minced
1 teaspoon dried thyme
Salt and freshly ground black pepper, to taste
1 cup freshly grated Asiago cheese
Fresh parsley, chopped (optional, for garnish)
Instructions
1. Peel the onions and trim the ends slightly to create flat surfaces. Slice into 1 to 1½-inch thick rounds, keeping the rings intact.
2. Preheat your oven to 375°F (190°C). Lightly grease a cast iron skillet or baking dish.
3. In a small saucepan or bowl, mix the melted butter, olive oil, minced garlic, thyme, salt, and pepper.
4. Arrange onion slices flat in the pan. Brush or spoon the garlic butter mixture over the top of each slice.
5. Cover the dish with foil and bake for 30–35 minutes, or until the onions are fork-tender.
6. Remove the foil and top each onion slice with a generous amount of grated Asiago cheese.
7. Switch the oven to broil and return the dish for 2–4 minutes until the cheese is melted and golden brown.
8. Let rest for a couple of minutes. Garnish with fresh parsley if using, and serve hot.
Notes
Use thick slices (1–1½ inches) so the onions hold their shape and don’t fall apart.
Always use freshly grated Asiago for better melt and richer flavor.
Let the dish rest a few minutes before serving for best texture and easier plating.
Nutrition
- Serving Size: 1 onion slice
- Calories: 215
- Sugar: 5g
- Sodium: 250mg
- Fat: 17g
- Saturated Fat: 9g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 10g
- Fiber: 2g
- Protein: 7g
- Cholesterol: 35mg
Keywords: baked onions, Asiago cheese, vegetarian side, easy dinner, food ideas, oven baked onions