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Ham and Potato Gratin for a Crowd (Granny's)















Trans-fat Free, Good source of fiber, Low Sodium


10 pounds potatoes
1 x salt
8 cups garlic sauce
with mustard
5 ounces butter
1 cup all-purpose flour
6 ½ cups milk
1 x salt
1 x black pepper
1 pinch nutmeg
2 large garlic cloves
¼ cup dijon mustard
½ teaspoon thyme
or sage
4 cups swiss cheese
or a mixture of cheese, coarsely grated
1 1/2 to 2 quarts ham


SPECIAL EQUIPMENT SUGGESTED: A food processor is useful for slicing and grating; and 8-quart covered kettle.

A heavy-bottomed 3-quart saucepan, for the sauce.

A buttered 6-quart baking dish about 3 inches deep, for the final dish.

THE POTATOES: Have ready the kettle containing 4 cups of cold water.

Peel the potatoes and slice them ¼ inch thick, dropping them into the cold water to cover as you do so.

Cover the kettle, and bring to the boil.

Uncover and boil slowly for 3 to 4 minutes, until barely cooked through eat several slices to check.

Drain, cover the kettle again for 3 to 4 minutes to firm up the potato slices, then uncover.

THE GARLIC AND MUSTARD SAUCE: Make the classic white sauce; cook the butter and flour together in the saucepan until they foam and froth for 2 minutes without coloring.

Off heat pour in half the hot milk; whisk vigorously to blend as you pour in the rest; simmer for 3 minutes, stirring.

Remove from heat and whisk in the seasonings; bring to the simmer again; taste carefully, and add additional seasonings to taste.

ASSEMBLING: Spoon a 1/16-inch layer of sauce on the bottom of the buttered baking dish.

Set aside 3 cups of the sauce and 1 cup of the cheese for the topping.

Now, to arrange everything in 4 layers, start with a quart of the potatoes, then a quarter of the ham, follow by a third of the sauce and sprinkle on a third of the cheese.

Continue in layers, finishing the final layer with the remaining potatoes and ham; spread on the reserved 3 cups of sauce to cover completely, then the last of the cheese.

AHEAD OF TIME NOTE: May be prepared a day in advance, cover when cool and refrigerate.

An hour or so before you plan to serve, preheat the oven to 375℉ (190℃).

Bake in the upper third level just until the potatoes are bubbling hot and the top has browned nicely.

About 45 minutes.

AHEAD OF TIME NOTE: May be kept warm uncovered on a hot tray but be sure not to overheat or the potatoes and ham will dry out.


* not incl. in nutrient facts

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Nutrition Facts

Serving Size 287g (10.1 oz)
Amount per Serving
Calories 32631% of calories from fat
 % Daily Value *
Total Fat 11g 18%
Saturated Fat 7g 35%
Trans Fat 0g
Cholesterol 34mg 11%
Sodium 134mg 6%
Total Carbohydrate 15g 15%
Dietary Fiber 4g 15%
Sugars g
Protein 22g
Vitamin A 9% Vitamin C 24%
Calcium 24% Iron 5%
* based on a 2,000 calorie diet How is this calculated?


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