INGREDIENTS
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1 ¼ cups all-purpose flour
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⅓ cup black cocoa
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⅓ cup Dutch process cocoa
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¾ teaspoon baking powder
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¾ teaspoon baking soda
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½ teaspoon salt
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½ cup plain Greek yogurt {a regular store bought little cup is enough}
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2 sticks unsalted butter, slightly softened
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1 ¼ cups sugar
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3 large eggs
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1 ½ teaspoons vanilla extract
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⅔ cup creamy peanut butter
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¼ teaspoon vanilla extract
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⅓ cup powdered sugar
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4 tablespoons unsalted butter, slightly softened
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1 cup sour cream
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8 ounces dark chocolate chips