INGREDIENTS
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From Joy the Baker
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1/2 cup (1 stick) unsalted butter, at room temperature
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1 cup granulated sugar
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1 large egg
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1 teaspoon pure vanilla extract
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1 1/2 cups all-purpose flour
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1/3 cup unsweetened cocoa powder
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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4 to 6 ounces dark chocolate chips or chunks
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coarse sea salt, for topping (optional)