Golden Sweet Onion Tart with Gruyère and Herbs

A delicious and easy-to-make Golden Sweet Onion Tart filled with creamy Gruyère cheese and fresh herbs, perfect for impressing family and friends.

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Preheat the oven to 375°F (190°C).
In a skillet, heat olive oil over medium heat and add the sliced onions. Cook until they are soft and caramelized, about 20-25 minutes.
In a bowl, whisk together the eggs, cream, salt, and pepper.
Add the cooked onions, Gruyère cheese, and fresh herbs to the egg mixture.
Transfer the pie crust to a tart pan and pour the filling into the crust.
Bake for 30-35 minutes or until the tart is set and golden brown. Let it cool slightly before slicing and serving.

For best results, chill onions before slicing to minimize tears. You can customize this tart by adding spinach or mushrooms to the filling.