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Loaded Baked Potato Gratin

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Potato Type: Russet
Cuisine: American
Prep Method: Baked


Side DishMain Dish


Serves 24 containers of 4 side servings each (96 side-dish servings)



Potato Gratin

  • 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

Potato Toppings

  • 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


Potato Gratin

  1. Heat a convection oven to 350 °F.
  2. In a large container, whisk together the flour, salt, pepper, and milk. Blend in the butter. Fold in the potatoes.
  3. Within 10 minutes, portion 24 ounces of potato mixture into 24 each 32-oz. dual ovenable or aluminum baking pans.
  4. Pour 1 ½ cups boiling water into each pan to cover the potatoes. Cover each pan with foil.
  5. Bake the gratins for 20 minutes, until potatoes are tender when tested with a knife or pick. The sauce should be bubbling and still a bit thin. It will thicken as it cools. Let cool for 15 minutes, then blast chill or refrigerate. Hold up to 2 days before topping and reheating.

Potato Toppings

  1. In a large bowl, mix the breadcrumbs, bacon, scallions, and sour cream. Cover and refrigerate up to 1 day.
  2. Top each 4-serving container with 3.25 ounces breadcrumb mixture. Sprinkle it with ½ ounce cheese. Cover and refrigerate to reheat as needed.

To Serve

  1. Reheat each 4-serving container in a 375°F oven for 15 minutes, covered, on a middle rack. Uncover and bake for 5 more minutes to brown. Let rest for 1 minute before serving.


  • To use fresh raw potatoes in place of dehydrated, for each serving, increase potato weight from 4 oz. of dehydrated to 10 oz. fresh, omit water and increase milk from 8 to 12. fl. oz.

See our Recipes for Baked Potatoes and Learn How to Make the Perfect Baked Potato!


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Renate DeGeorge

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