INGREDIENTS
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2 cups (250g) all-purpose flour
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2 teaspoons cornstarch(aka cornflour)
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1 teaspoon baking soda
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1/2 teaspoon salt
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3/4 cup (1.5 sticks or 170g) unsalted butter, softened to room temperature
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3/4 cup (150g) packed light or dark brown sugar
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1/4 cup (50g) granulated sugar
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1 large egg, at room temperature
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2 teaspoons pure vanilla extract
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1 and 1/4 cup (225g) semi-sweet chocolate chips
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12-inch pizza pan (one with a lip so there's no spill over the edges-- I like this one and this one)