INGREDIENTS
1 lb
Zucchini or other summer squash
1
Black pepper, Freshly ground
1 1/4 tsp
Sea or table salt, fine
2 tbsp
Butter or olive oil
8
thin slices Bread
3/4 cup
Fontina or provolone cheese
1 cup
Gruyere cheese
1/4 cup
Parmesan or pecorino cheese