INGREDIENTS
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6 tablespoons unsalted butter
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2 tablespoons canola oil
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5.6 ounces all-purpose flour (about 1 1/4 cups)
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3.3 ounces whole-wheat flour (about 3/4 cup)
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1 teaspoon baking powder
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1/2 teaspoon kosher salt
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3/4 cup packed light brown sugar
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2/3 cup granulated sugar
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1/2 teaspoon vanilla extract
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2 large eggs, lightly beaten
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1/2 cup semisweet chocolate chips
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1/3 cup dark chocolate chips (such as Hershey's Special Dark)