INGREDIENTS
2 lb
Yukon gold potatoes, peeled and thinly sliced
2 1/2 cups
half and half
1 tsp
kosher salt
1/2 tsp
freshly ground black pepper
3/4 cup
Parmesan, grated
2 cups
Gruyere, shredded
Nonstick cooking spray
Mandoline slicer
2 1/2 qt
baking dish