Best Christmas Tree Cookies Recipe - How To Make Christmas Tree Cookies

Ingredients

• 3 c. (360 g.) all-purpose flour, plus more for rolling
• 1 tsp. baking powder
• 1/2 tsp. kosher salt
• 1 c. (2 sticks) unsalted butter, softened
• 1 c. (200 g.) granulated sugar
• 1 large egg
• 1 tbsp. milk
• 1 tsp. pure vanilla extract
• 1/4 c. meringue powder
• 5 to 8 tbsp. water
• 4 c. (460 g.) powdered sugar
• Green liquid food coloring, for icing