Instructions:
- Preheat oven to 375°F (190°C). Lightly grease a 9-inch pie dish.
- Sauté the diced bacon in a large non-stick skillet over medium heat until crispy. Remove bacon with a slotted spoon, reserving about 1 teaspoon of fat. Add diced onion to the skillet and cook in the reserved fat until soft and translucent (about 3-4 minutes). Remove from heat.
- In the prepared pie dish, evenly scatter the cooked bacon, cooked onions, and half (3/4 cup) of the grated cheddar cheese.
- In a large bowl, whisk together the eggs, milk, and heavy cream until just combined and slightly frothy.
- Stir in the salt, pepper, and nutmeg into the egg mixture. Taste the mixture for seasoning, keeping in mind the bacon adds salt.
- Slowly pour the liquid custard mixture over the bacon and cheese mixture in the pie dish. Gently stir everything once or twice to ensure even distribution.
- Sprinkle the remaining half of the cheddar cheese and the fresh chives over the top surface.
- Bake for 40–45 minutes, or until the edges are set, golden brown, and a thin knife inserted near the centre comes out almost clean.
- Let the quiche cool on a wire rack for at least 10–15 minutes before slicing and serving to allow the structure to firm up.