Chocolate Sandwich Cookies | RICARDO

Ingredients

• 1 cup (250 ml) unbleached all-purpose flour
• 1/2 cup (125 ml) sifted cocoa powder
• 1 pinch salt
• 1/2 cup (125 ml) unsalted butter, softened
• 1/2 cup (125 ml) icing sugar
• 1 egg yolk
• 1 tablespoon (15 ml) water, approximately
• 1 1/4 cups (310 ml) icing sugar
• 1/4 cup (60 ml) unsalted butter, melted
• 1 tablespoon (15 ml) water
• 1/2 teaspoon (2.5 ml) vanilla extract