– 1 cup (2 sticks, or 230 grams) unsalted butter (melted and slightly cooled) – 1 ½ cups (300 grams) packed light or dark brown sugar – 2 large eggs at room temperature – 1 large egg yolk at room temperature
– 2 teaspoons pure vanilla extract – 2 ½ cups (315 grams) all-purpose flour (spooned & leveled) – 1 teaspoon baking soda – 1 teaspoon salt – 1 (12-ounce package, 340 grams) semi-sweet chocolate chip
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