"This fudgy, crispy, chewy chocolate sugar cookie recipe comes from '100 Cookies' by award-winning blogger Sarah Kieffer...."
INGREDIENTS
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2 cups (284 grams) all-purpose flour
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1/2 cup (50 grams) Dutch-process cocoa powder
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3/4 teaspoon baking soda
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3/4 teaspoon salt
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1 cup (2 sticks or 227 grams) unsalted butter, at room temperature
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1 3/4 cups (350 grams) granulated sugar, plus 1/2 cup (100 grams) for rolling
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1 large egg plus 1 large yolk
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2 teaspoons pure vanilla extract