Leek and Potato Soufflé
With Ham and Fontina
Ingredients
1
½ pounds yellow-fleshed potatoes, like Yukon or Bintje, peeled and chopped
1 ½ cups half-and-half or milk
Salt
and pepper
2 tablespoons butter
2 medium leeks, white and tender green
parts, diced (about 2 cups)
1 teaspoon chopped fresh thyme
2 garlic cloves, minced
Pinch cayenne
Grated nutmeg, to taste
4 ounces thick-sliced cooked ham, diced
4 ounces coarsely grated fontina or Gruyère
3 eggs, separated
1 tablespoon butter for buttering the baking
dish
1 ounce finely grated Parmesan
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PREPARATION
Heat the oven to 375 degrees. In
well-salted water, boil the potatoes until tender, then drain, put in a large
mixing bowl and mash with the half-and-half. Cool slightly.
Heat
2 tablespoons butter in a skillet over medium heat. Add the leeks, season with
salt and pepper and cook until softened but still bright green, 3 to 4 minutes.
Add thyme and garlic and cook for 1 minute more. Add the cooked leeks to the
mashed potatoes and mix well. Add the cayenne, nutmeg, ham and Fontina or
Gruyère. Mix well, taste and adjust seasoning. (It should be fairly well
seasoned, as the egg, when added, will dilute the flavor.) Beat in the 3 egg
yolks.
Butter a 2-quart baking dish and sprinkle the bottom and sides with half the grated Parmesan.
In a clean bowl, beat the egg whites to stiff peaks. Stir 1/3 of the beaten
whites into the potato mixture to lighten and thin it slightly. Quickly fold in
the remaining whites, then scrape the soufflé batter into the prepared dish.
Sprinkle the top with the remaining Parmesan.
Bake
for about 40 minutes, until nicely browned. Check the center for doneness with
a paring knife or skewer. May rest 10 minutes before serving.