For the potato layers
01 -
5 medium russet potatoes, about 2 lb (900 g), peeled and sliced 1/8 inch thick
02 -
1 teaspoon kosher salt, divided
03 -
1/2 teaspoon black pepper
04 -
3 cups (300 g) shredded sharp cheddar cheese
05 -
3 cups (300 g) shredded Gruyère cheese
06 -
9 thin slices ham, about 8 oz (225 g)
07 -
1 tablespoon softened butter or oil, for greasing the skillet
For the garlic cream
08 -
1 cup (240 ml) heavy cream
09 -
2 tablespoons all-purpose flour
10 -
2 cloves garlic, minced
11 -
1/4 cup (30 g) grated Parmesan cheese
12 -
1 tablespoon chopped fresh parsley, for garnish