INGREDIENTS
8
medium Russet potatoes, peeled and cubed
4 tbsp
unsalted butter
1 tsp
kosher salt
1/2 tsp
garlic salt
1/2 tsp
freshly ground black pepper
1 cup
warmed milk
1/4 cup
grated Parmesan Cheese
1 1/2 cups
pasta or marinara sauce
1 1/2 cups
shredded mozzarella cheese