"Copycat Oreo chocolate sandwich cookies double stuffed with extra thick vanilla filling...."
INGREDIENTS
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3 ounces/85g/ 6 tablespoons unsalted butter, room temperature
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3 + 3/4 ounces/106.3g / ½ cup sugar
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1 + 1/2 ounces/42.52g/ 3 tablespoons brown sugar
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3/4 teaspoon salt
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1/4 plus 1/8 teaspoons baking powder
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1/4 teaspoon baking soda
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1/2 teaspoon instant coffee powder
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1 + 1/2 teaspoons vanilla extract
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2 egg yolks
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4 ounces/113.4g / ¾ cup all purpose flour (or rice flour), sifted after measuring
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3 ounces/85g / 1 cup cocoa powder, sifted after measuring, plus more for rolling out cookies
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2 ounces/56.7g/ 4 tablespoons unsalted butter at room temperature
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5 ounces/141.7 / 1 + ¼ cups powdered sugar, sifted
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1 teaspoon vanilla extract
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a pinch of salt