Loaded Baked Potato Gratin | Baked Potato Gratin | Potato Gratin

Ingredients

• 1 ½ cups All-purpose flour
• •½ cup Kosher salt, fine
• 1 tablespoon Black pepper
• 6 quarts Whole milk
• 1 ½ cups Unsalted butter, melted, or vegetable oil
• 6 1/4 lbs. Russet potatoes, dehydrated, hash brown plain or sliced scalloped
• 9 quarts Boiling water
• 1 ½ lbs. Panko breadcrumbs
• 12 ounces Bacon, cooked and chopped
• 8 ounces Scallions, thinly sliced
• 36 ounces Sour cream
• 12 ounces Cheddar cheese, shredded