Stuffed baked onions are humble and surprisingly rich. As the onions roast, they turn sweet and tender, creating the perfect base for melted cheese and fresh herbs. Finished gratin-style, this dish feels cozy and elegant at the same time simple ingredients, deep flavor.
This is Let’s Veg comfort, baked slowly and served warm.
Start with the Vegetable Cooking Guide:
https://letsveg.com/vegetable-cooking-guide
Baked Onion Gratin
Baked gratin onions stuffed with cheese and herbs until tender and golden. A rustic Let’s Veg recipe perfect for comforting vegetarian meals.
Ingredients
Equipment
Oven Baking pans
Cooking Instructions
- Preheat oven to 400°F (205°C).
- Peel onions and cut off the top third. Scoop out the center layers, leaving a sturdy shell.
- Brush onions with olive oil and season with salt and pepper.
- Place onions in a baking dish, cut-side up.
- In a bowl, mix grated cheese, Parmesan, herbs, and garlic if using.
- Fill each onion generously with the cheese mixture.
- Sprinkle breadcrumbs on top if using.
- Cover loosely with foil and bake for 30 minutes.
- Uncover and bake an additional 10-15 minutes, until onions are tender and tops are golden.
- Rest 5 minutes before serving.
Nutrition
Notes
Sweet onions work especially well here
Add spinach or mushrooms to the filling for variation
Serve as a side or a vegetarian main with salad