5 T. unsalted Butter (use extra for greasing pan) 5 T. Plain bread crumbs 3 pounds russet potatoes, peeled & cut into 1” pieces ½ cup heavy cream ½ teaspoon sea salt ¼ teaspoon fresh ground pepper 3 large eggs 6 ounces mozzarella or fontina cheese, cut ½ inch cubes ¼ pound thinly sliced salami,