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Perfect Shamrock Sugar Cookies Recipe with Easy Royal Icing Decoration Tutorial

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These Perfect Shamrock Sugar Cookies feature a tender, buttery base with crisp edges and a smooth, glossy royal icing decoration, perfect for St. Patrick’s Day or festive occasions.

Ingredients

Scale
  • 2 ¾ cups (345 g) all-purpose flour, sifted
  • 1 teaspoon baking powder
  • ½ teaspoon salt
  • 1 cup (227 g) unsalted butter, softened (not melted)
  • 1 ½ cups (300 g) granulated sugar
  • 1 large egg, room temperature
  • 2 teaspoons pure vanilla extract
  • 1 teaspoon almond extract (optional)
  • 3 cups (360 g) powdered sugar, sifted
  • 2 tablespoons meringue powder
  • 5–6 tablespoons warm water
  • Green gel food coloring
  • Optional: A few drops of vanilla or lemon extract for flavor

Instructions

  1. Mix Dry Ingredients: In a medium bowl, whisk together 2 ¾ cups (345 g) sifted all-purpose flour, 1 teaspoon baking powder, and ½ teaspoon salt. Set aside.
  2. Cream Butter and Sugar: Using a mixer, beat 1 cup (227 g) softened unsalted butter with 1 ½ cups (300 g) granulated sugar on medium-high speed for about 3-4 minutes until pale and fluffy.
  3. Add Egg and Extracts: Beat in 1 large room-temperature egg, 2 teaspoons vanilla extract, and 1 teaspoon almond extract (if using) until combined.
  4. Combine Wet and Dry: Slowly add the dry flour mixture in batches, mixing on low speed until just incorporated. Avoid overmixing.
  5. Chill the Dough: Shape the dough into a disk, wrap in plastic wrap, and refrigerate for at least 1 hour or up to 24 hours.
  6. Preheat Oven and Prepare Baking Sheets: Heat oven to 350°F (175°C). Line baking sheets with parchment paper or silicone mats.
  7. Roll and Cut: On a lightly floured surface, roll out the dough to about ¼ inch (6 mm) thickness. Use a shamrock cookie cutter to cut shapes and transfer to baking sheets.
  8. Bake: Bake for 10-12 minutes, or until edges start to turn golden. Avoid overbaking.
  9. Cool Completely: Let cookies cool on baking sheet for 5 minutes, then transfer to a wire rack to cool fully before decorating.
  10. Prepare Royal Icing: In a bowl, combine 3 cups (360 g) sifted powdered sugar, 2 tablespoons meringue powder, and 5 tablespoons warm water. Beat until smooth and stiff peaks form. Adjust water for piping consistency.
  11. Color and Decorate: Tint royal icing with green gel food coloring. Use piping bags with small round tips to outline each shamrock, then flood the interior with thinner icing. Use a toothpick to spread icing evenly and pop air bubbles.
  12. Dry and Store: Allow royal icing to dry at room temperature for 4-6 hours or overnight before stacking or packaging.

Notes

Chill dough for at least 1 hour to prevent spreading. If dough is sticky, chill again for 10-15 minutes. For royal icing, sift powdered sugar to avoid clogs. Adjust icing consistency by adding water if too thick. Let icing dry fully before stacking or packaging. Use disposable sandwich bags if piping bags are unavailable.

Nutrition

Keywords: shamrock sugar cookies, royal icing, St. Patrick's Day cookies, sugar cookies, festive cookies, cookie decorating, easy sugar cookies

Find it online: https://norasfoods.com/perfect-shamrock-sugar-cookies-recipe-with-easy-royal-icing-decoration-tutorial/