Ingredients
Method
Prepare the Base
- In a mixing bowl, combine the flour and salt. Add the cold butter and mix until it resembles coarse crumbs.
- Gradually add ice water, mixing until the dough forms. Shape into a disk, wrap in plastic, and refrigerate for 30 minutes.
Caramelize the Onions
- Heat olive oil in a large skillet over medium heat.
- Add the sliced onions and salt, stirring occasionally until they are soft and golden brown, about 25 minutes.
Assemble the Dish
- Preheat the oven to 375°F (190°C).
- Roll out the chilled dough on a floured surface and transfer it to a pie dish.
- Spread the caramelized onions evenly over the crust and top with shredded Gruyère cheese.
Bake
- Bake in the preheated oven for 30 minutes, or until the cheese is bubbly and golden.
- Remove from oven and let it cool for a few minutes before serving.
Nutrition
Notes
For extra flavor, consider adding a splash of balsamic vinegar to the onions while caramelizing.
