INGREDIENTS
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Butter, for greasing pan
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3/4 cup cooked black beans
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1/2 cup vegetable oil, or olive oil
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2 eggs
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1/4 cup unsweetened cocoa powder
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2/3 cup sugar
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1 teaspoon instant coffee or espresso
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1 teaspoon vanilla extract
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1/2 cup mini chocolate chips, divided
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1/3 cup flour
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1/2 teaspoon baking powder
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1/2 teaspoon salt
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1/4 cup confectioners' sugar, for dusting