"These chocolatey delights are just healthy enough...."
INGREDIENTS
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Nonstick cooking spray
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1 1/2 c. all-purpose flour
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3/4 c. wheat bran
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1/3 c. unsweetened cocoa powder (not Dutch process)
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1 tsp. baking soda
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1/2 tsp. kosher salt
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2 large eggs
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1 c. buttermilk (low-fat or full-fat)
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1/2 c. sugar
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1/4 c. canola oil
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1 tsp. pure vanilla extract
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8 oz. zucchini (about 1 medium), coarsely grated
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1/2 c. semisweet chocolate chips, divided