INGREDIENTS
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1 cup plus 2 tablespoons (2 1/4 sticks) salted butter, cut into 1/2-inch pieces
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1/2 cup granulated sugar
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1/4 cup light brown sugar
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1 teaspoon vanilla extract
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2 1/4 cups all-purpose flour
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6 ounces semisweet or bittersweet dark chocolate, roughly chopped
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1 large egg, beaten Demerara sugar, for rolling
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Flaky sea salt, such as Jacobsen, for sprinkling