Ingredients:
- 1 ½ cups (190g) all-purpose flour, plus extra for dusting
- ½ teaspoon (3g) salt
- ½ cup (115g) unsalted butter, very cold, cut into small cubes
- ¼ cup (60ml) ice water, plus more if needed
- 1 large egg yolk (for egg wash, optional)
- 6 ounces (170g) bacon lardons, or thick-cut bacon, diced
- 1 tablespoon (15ml) olive oil
- 1 medium onion, finely chopped
- 4 large eggs
- 1 ½ cups (355ml) heavy cream
- ½ cup (115ml) whole milk
- ¼ teaspoon (1g) ground nutmeg
- ½ teaspoon (3g) salt
- ¼ teaspoon (1g) black pepper
- 1 cup (115g) Gruyère cheese, shredded (or Emmental, if you're feeling Swiss!)
Instructions:
- Combine flour and salt.
- Cut in the cold butter using a food processor or pastry blender until the mixture resembles coarse crumbs.
- Gradually add ice water, mixing until the dough just comes together.
- Form the dough into a disc, wrap in plastic wrap, and chill for at least 1 hour.
- Cook the bacon lardons in a skillet over medium heat until crispy. Remove and set aside, reserving rendered fat.
- Sauté onion in the reserved bacon fat (and a little olive oil if needed) until softened and translucent.
- Whisk together eggs, cream, milk, nutmeg, salt, and pepper in a bowl.
- Preheat oven to 375°F (190°C).
- Roll out the chilled dough on a lightly floured surface.
- Carefully transfer the dough to the tart pan, pressing it into the bottom and up the sides. Trim any excess dough.
- Dock the bottom of the crust with a fork.
- Blind bake the crust: Line the crust with parchment paper and fill with pie weights or dried beans. Bake for 15 minutes.
- Remove the parchment paper and pie weights, and bake for another 5-7 minutes, or until the crust is lightly golden.
- Sprinkle half of the shredded cheese on the bottom of the partially baked crust.
- Arrange the cooked bacon and sautéed onions evenly over the cheese.
- Pour the egg mixture over the bacon and onions.
- Top with the remaining cheese.
- Bake for 30-40 minutes, or until the filling is set and the crust is golden brown. The center should jiggle slightly when the pan is gently shaken.
- Let cool slightly before serving.