"Never heard of an impossible pie? The lure of this 1970s phenomenon is that you get a “crust” without rolling out pie dough. Cheese and ham make this pie impossibly good!..."
INGREDIENTS
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1 tablespoon unsalted butter, softened, plus 2 tablespoons melted
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3 tablespoons finely grated Parmesan cheese
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2 cups Gruyère cheese, shredded
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4 ounces thickly sliced deli ham, chopped
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4 scallions, minced
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1/2 cup (2 1/2 ounces) all-purpose flour
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3/4 teaspoon baking powder
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1/2 teaspoon pepper
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1/4 teaspoon salt
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1 cup half-and-half
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4 large eggs, lightly beaten
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2 teaspoons Dijon mustard
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1/8 teaspoon ground nutmeg