St Patricks Day Shamrock Cookies (Print View)

Celebrate with shamrock-shaped sugar cookies decorated with smooth green royal icing, ideal for festive gatherings.

# Components:

→ Sugar Cookies

01 - 1 cup unsalted butter, softened
02 - 1 cup granulated sugar
03 - 1 large egg
04 - 1½ teaspoons pure vanilla extract
05 - ½ teaspoon almond extract, optional
06 - 2¾ cups all-purpose flour
07 - ½ teaspoon baking powder
08 - ½ teaspoon salt

→ Royal Icing

09 - 3 cups powdered sugar, sifted
10 - 2 tablespoons meringue powder
11 - 4 to 5 tablespoons warm water
12 - ½ teaspoon pure vanilla extract
13 - Green gel food coloring

# Directions:

01 - In a large bowl, beat softened butter and granulated sugar together with an electric mixer until light and fluffy, approximately 2 to 3 minutes.
02 - Add egg, vanilla extract, and almond extract if using. Beat until fully combined.
03 - In a separate bowl, whisk together flour, baking powder, and salt. Gradually add dry mixture to butter mixture, stirring just until incorporated.
04 - Divide dough in half. Flatten each portion into a disc, wrap in plastic wrap, and refrigerate for at least 1 hour.
05 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
06 - On a floured surface, roll out one dough disc to ¼-inch thickness. Cut out shamrock shapes using a cookie cutter, spacing cookies 1 inch apart on prepared sheets.
07 - Bake for 8 to 10 minutes until edges begin to turn golden. Cool on baking sheets for 5 minutes, then transfer to cooling rack until completely cooled.
08 - Combine powdered sugar, meringue powder, and vanilla in a bowl. Add water one tablespoon at a time, beating on low speed until stiff peaks form. Tint with green gel food coloring.
09 - Transfer icing to piping bag fitted with small round tip. Outline and flood each cooled cookie with icing. Add details or sprinkles as desired. Allow icing to dry completely before serving.

# Expert Advice:

01 -
  • They look so impressive that guests always assume you spent hours on them, when really the effort is mostly just patience and a steady piping hand.
  • The dough is forgiving enough that minor mistakes disappear under the green icing, making this feel less intimidating than fancy decorating usually is.
  • Hard royal icing means these cookies travel well and actually taste better the next day as flavors settle.
02 -
  • Don't rush the icing consistency, if it's too thin it'll slide off the cookies and pool on your counter, but if it's too thick your piping hand will cramp and the lines will look jagged.
  • Royal icing takes longer to dry than you think, usually 4 to 6 hours or overnight, so plan ahead and don't try to stack cookies before they're fully set.
03 -
  • If your royal icing starts to crust over while you're decorating, cover it with plastic wrap and it'll stay workable for hours.
  • Gel food coloring is stronger than liquid, so start with half the amount you think you need and build up the color gradually to avoid making the icing too dark or bitter.
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