-
Preheat the oven to 400 degrees F.
-
Drizzle the olive oil over the bottom of a 9x9 baking dish or cake pan. Set aside.
-
Wash and thinly slice the potatoes. A mandolin works well for this.
-
Dice the onion and combine the onion and garlic in a small bowl. Set aside.
-
Grade about 2 cups of cheese. Get your salt and pepper out for seasoning.
-
Once you are all set up, things move quickly from here. I like to do a layer of potatoes, season with salt and pepper, sprinkle 1/3 of the chopped onions and garlic on top of the potatoes, lay out about 2 strips of the bacon and top with cheese.
-
Repeat until you reach the top. I topped my last layer of potato only with cheese and bacon.
-
Lay a square of parchment paper on top of the casserole before covering with foil.
-
Place in the oven and cook for about 1 hour and 15 minutes or until the potatoes are cooked through. A sharp knife will easily poke through the casserole when cooked. Some people recommend you place a baking sheet under your dish to catch any drips that may escape.
-
If the cheese is not crispy or bubbly enough, remove the foil and place under the broiler for a few minutes.
-
Remove the casserole from the oven to cool a bit before cutting into portions and serving.