Ingredients
Method
- Preheat the oven to 400°F. Coat the bottom of a 2-quart rectangular baking dish with cooking spray.
- Line the baking dish with one-third of the potatoes. Sprinkle with 1 tablespoon of the flour, one-third of the Gruyere, one-third of the Parmesan, one-third of the garlic salt, one-third of the shallot, and a sprinkle of black pepper. Repeat the layers two more times.
- Pour the milk over the top. Cover with foil and bake for 25 minutes. Uncover and bake 20 minutes longer, or until the potatoes are tender and the cheese is browned. Let sit for 10 minutes before serving.