St Patricks Day Cookies - My Recipe Critic

Ingredients

• 1 cup (225 g) unsalted butter, softened
• 1 cup (200 g) granulated sugar
• 1 large egg, room temperature
• 2 teaspoons pure vanilla extract
• 3 ¼ cups (400 g) all-purpose flour, sifted
• 1 teaspoon baking powder
• 1 teaspoon fine sea salt
• 3 ½ cups (450 g) confectioners' sugar, sifted
• 2 tablespoons meringue powder
• 5 – 6 tablespoons warm water (adjust as needed)
• ¼ teaspoon mint extract (optional)
• Emerald Green gel food colouring, as needed