simple quiche lorraine

Steps

1. 1gather all ingredients. preheat the oven to 450 degrees f (230 degrees c).
2. 2place pie pastry into a 9-inch pie pan; line with a double layer of aluminum foil and a layer of pie weights or dried beans.
3. 3bake in the preheated oven until golden on the edges, about 8 minutes. carefully remove the foil and weights; continue baking until crust is set and dry, about 5 minutes more. remove from the oven and reduce the temperature to 325 degrees f (165 degrees c).
4. 4while the crust is baking, cook bacon in a large skillet over medium-high heat until crisp, about 10 minutes. transfer to a paper towel-lined plate and crumble when cool enough to handle. drain all but 2 tablespoons drippings from the skillet.
5. 5add onion to drippings in the skillet; cook and stir over medium heat until tender, about 5 minutes. use a slotted spoon and transfer to a bowl.
6. 6toss swiss cheese and flour together in a small bowl. whisk milk, eggs, and salt together in a large bowl, then stir in bacon and onion.
7. 7mix in cheese mixture until well combined, then pour into pie crust.
8. 8bake in the preheated oven until a knife inserted into the center comes out clean, 35 to 40 minutes. let stand for 10 minutes before serving.