A Rustic Italian Classic from Nonna’s Kitchen
Simple, comforting, and full of authentic Mediterranean flavors — Nonna’s Italian Baked Onions are a humble dish transformed into something special.
Slowly baked with tomatoes, garlic, parsley, and a generous sprinkle of Grana Padano, these onions become tender, sweet, and irresistibly savory.
Perfect as a side dish, light main course, or part of a traditional Italian family meal.
Ingredients (Serves 5)
5 onions
3 red tomatoes, chopped
1 clove garlic, minced
1 sprig parsley, chopped
Salt and pepper to taste
Extra virgin olive oil to taste
2 handfuls Grana Padano cheese
2 cups water
Instructions
Prepare the base
Place the chopped tomatoes, parsley, garlic, salt, pepper, and a drizzle of extra virgin olive oil in a baking dish.Add the onions
Peel the onions and arrange them on top of the tomato mixture. Season lightly with more salt, pepper, and a drizzle of olive oil.Sprinkle with cheese
Generously cover the onions with grated Grana Padano cheese.Add moisture
Pour 2 cups of water into the baking dish to help the onions soften and cook evenly.Bake
Transfer to a preheated oven at 200°C (390°F) and bake for about 1 hour, or until the onions are tender and golden on top.
Cooking Time
Preparation: 10 minutes
Cooking: 1 hour
Total time: 1 hour 10 minutes
Tips & Tricks
For extra depth of flavor, drizzle a little balsamic vinegar over the onions before baking.
If you like a cheesy crust, switch the oven to broil for the last 5 minutes.
These baked onions are delicious warm, but also excellent at room temperature, making them great for buffets or summer picnics.
Pair with crusty bread to soak up the flavorful juices.
Nutritional Facts (per serving, approx.)
Calories: 210 kcal
Carbohydrates: 19 g
Protein: 7 g
Fat: 11 g
Fiber: 4 g
Sodium: 180 mg

Nonna's Italian Baked Onions
Notes
Ingredients (Serves 5)
- 5 onions
- 3 red tomatoes, chopped
- 1 clove garlic, minced
- 1 sprig parsley, chopped
- Salt and pepper to taste
- Extra virgin olive oil to taste
- 2 handfuls Grana Padano cheese
- 2 cups water
Instructions
- Prepare the base
Place the chopped tomatoes, parsley, garlic, salt, pepper, and a drizzle of extra virgin olive oil in a baking dish. - Add the onions
Peel the onions and arrange them on top of the tomato mixture. Season lightly with more salt, pepper, and a drizzle of olive oil. - Sprinkle with cheese
Generously cover the onions with grated Grana Padano cheese. - Add moisture
Pour 2 cups of water into the baking dish to help the onions soften and cook evenly. - Bake
Transfer to a preheated oven at 200°C (390°F) and bake for about 1 hour, or until the onions are tender and golden on top.





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