INGREDIENTS
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2 cups all-purpose flour
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1/3 cup cocoa powder
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1 to 2 tablespoons espresso powder
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1 tablespoon baking powder
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1/2 teaspoon salt
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1 (10- to 12-ounce) package semisweet chocolate chunks
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2 large eggs, lightly beaten
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1 cup milk
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3/4 cup vegetable oil
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1/2 cup light brown sugar
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1/2 cup sugar
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1 teaspoon vanilla extract