INGREDIENTS
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6 tablespoons unsalted butter, at room temperature
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1 to 2 teaspoons dijon mustard
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1 to 2 teaspoons anchovy paste
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1 baguette, cut into 4 pieces, each halved lengthwise
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4 large eggs
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Kosher salt and freshly ground pepper
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1/4 pound country pate or ham, cut into 4 slices
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2 ounces gruyere or comte cheese, thinly sliced
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1 cup frisee or other greens
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Finely sliced chives, for garnish