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Simple Fantastic Kitchen
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How to Decorate St Patrick’s Day Cookies
Join us as we share our secret family sugar cookie recipe and our homemade buttercream frosting recipe as we show how to best decorate St Patrick’s Day sugar cookies shaped like shamrocks. This easy cookies tutorial will have you making beautiful shamrock cookies and lucky cookies in no time!Â

St Patrick’s Day Cookies Decorating Instructions
NOTE: These Instructions will cater to decorating products I’m using.
If using homemade frosting, use a piping kit with tips listed. Keep portion of frosting plain for white and dye a portion green.
Ingredients & Equipment
(Products I’m using in the product links below) Icing Spatula. No. 21 & No 3 Tip with Green Decorating Frosting.
Use store bought green and white frostings. Use the large round and the shamrock cookie cutters to bake the cookies from the recipe above. NOTE: These cookies should not be considered stackable.
Lucky St Patrick’s Day Cookies
Use white frosting to frost the cookies. Be sure to spread the frosting as evenly as possible and clean up the edges with the icing spatula. Screw on Tip No 3 with Green Decorating Icing. In center of cookie, write “Lucky”. Then change to screw on No 21 tip and do a dot motion over and over again around the rim of the cookie. Allow to cure 10-15 minutes.
Shamrock St Patrick’s Day Cookies
Use green frosting to frost the cookies. Be sure to spread the frosting as evenly as possible and clean up the edges with the icing spatula. On a plate, sprinkle green sugar all over the cookies, then gently turn the cookie on its side and tap the plate, getting most of the excess sugar off.
🛒 Links to products discussed above:
St. Patrick’s Day Irish Shamrock Cookie Cutter
Multi-functional Acrylic Cake Stand
Recommended Food coloring for Frosting
Reusable Piping Bag and Tip Set
The Homemade Buttercream instructions are on the recipe card below. I hope you enjoy these cookies as much as I do!

How to Decorate St Patrick's Day Cookies
Equipment
- No. 21 Tip for white line down middle in grass
- No 3 tip optional in place of white writing gel
Ingredients
- Buttercream Frosting green
- Buttercream Frosting white
- Edible writing gel green
- AmeriColor Gel Food Coloring Kit Recommended food coloring for homemade frosting
- Sparkling / Sanding Sugar green
- Sparkling / Sanding Sugar pink
- Hersheys Kisses optional for decorating the empty spaces on the platter
Instructions
- No. 21 & No 3 Tip with Green Frosting. Use store bought white and green frosting or dye homemade frosting. Use the large round and shamrock cookie cutters to bake the cookies from the recipe above. NOTE: These cookies should not be considered stackable.
- LUCKY COOKIES: Use white frosting to frost the cookies. Be sure to spread the frosting as evenly as possible and clean up the edges with the icing spatula. Use Tip No 3 with Green Frosting (or green writing gel). In center of cookie, write "Lucky". Then change to No 21 tip and do a dot motion over and over again around the rim of the cookie with green frosting. Allow to cure 10-15 minutes.
- SHAMROCK COOKIES: Use green frosting to frost the cookies. Be sure to spread the frosting as evenly as possible and clean up the edges with the icing spatula. On a plate, sprinkle green sugar all over the cookies, then gently turn the cookie on its side and tap the plate, getting most of the excess sugar off.
Video
Notes

Hi, I’m Allison, the founder of Simple Fantastic Kitchen. I live in the mountains in a tiny house with a tiny kitchen where I make