The Best Gluten Free St Patrick’s Day Cookies

These delicious gluten free St. Patrick’s Day cookies are made for celebrating! The gluten-free cut-out sugar cookie dough is easy to make, and there is a dairy-free option! I also share all of my tips and tricks to decorate these gluten free shamrock cookies with royal icing!

These gluten free shamrock-shaped sugar cookies are made with my popular gluten free cut-out sugar cookie dough. They are cut out into shamrocks and rainbows because these are well-known symbols for St. Patrick’s Day.

The cookies are then baked and decorated with vibrantly colored royal icing. If you haven’t used royal icing, it is a type of icing made from powdered sugar, egg whites, and colorings. The royal icing is piped onto the cookies in various colors and designs and allowed to dry, creating a smooth, hard finish.

You end up with an incredibly festive and delicious treat to serve for St. Patrick’s Day. We love decorating holiday cookies with royal icing, so be sure to also check out these Gluten Free Halloween Cut-Out Cookies and these Gluten Free Valentine’s Day Cookies too!

Why Make These Cookies:

1. This easy gluten free sugar cookie dough is made for using your favorite cookie cutters.
2. They are so easy to make.
3. I include lots of step-by-step directions for decorating.
4. Cookies are way better than green beer!

If you love cookies, I have TONS OF gluten free cookie recipes for you to try!

Ingredient Notes:

• Gluten Free Flour Blend – I recommend using King Arthur Measure for Measure or Bob’s Red Mill 1:1. Note you may need to add additional flour if you use Bob’s.
• Xanthan Gum – If the blend you have doesn’t contain a binder like xanthan gum, you will need to add 1 teaspoon.
• Baking Powder – Use aluminum-free!
• Butter – I recommend unsalted butter
• Vanilla – Use pure vanilla extract.
• Eggs – Size large.
• Powdered Sugar – Most brands are gluten free, but you can also check my powdered sugar list.
• Cream of Tartar – This is needed for the royal icing.
• Food Coloring – You can use gel or liquid food coloring. Note that natural food colorings will not be as vibrant in color as other food coloring.

Tips For Success:

• Take special care to measure correctly. If you add in too much gluten free flour or other ingredients, it can mess with the cookies as they bake. If they don’t have the proper ratios of ingredients, you may end up with a mess.
• Chill the dough when possible. I know you are probably ready to eat your cookies right now, but taking a few minutes to chill the batter makes them less likely to spread.
• Your oven temperature may be off. Periodically, check your oven temperature to make sure it’s right. Otherwise, the cookies will, for sure, spread if it’s not accurate.
• Use a cooled cookie sheet when baking. Don’t take a hot cookie sheet and put the batter on it, or I promise the cookies won’t turn out. They start baking immediately, and it messes with them. Use a couple of sheets and rotate them out when making large batches of cookies.
• Always let your royal icing dry before adding a new layer or color!

If you need more guidance, I also share a ton of gluten free baking tips that help you bake even better.

Recipe Step-By-Step Directions

Step 1: Add the sugar, flour, baking powder, and salt to a large mixing bowl. Use a wire whisk to blend them together.

Step 2: Add the softened butter, egg, and vanilla to a medium-sized bowl. Use the whisk to mix the.

You can use a stand mixer with a paddle attachment if you prefer.

Step 3: Pour the wet ingredients into the dry ingredients. Be sure to use a bowl scraper on the sides of the bowl to get all of the wet ingredients out of the bowl.

Step 4: Wrap the cookie dough in plastic wrap and refrigerate the dough for 30-45 minutes. This is to keep the dough from spreading when you bake it, AND it helps soften the rice flour in the gluten free flour blend so there is no grittiness.

Step 5: Preheat your oven to 350º F. Make sure the oven rack is in the middle position in your oven.

Remove the dough from the refrigerator. Place it onto a silicone mat or a clean surface. Use a rolling pin to roll the dough to ¼ to ½ inch thickness.

Step 6: Take your cookie cutters and cut out your shapes. Place the cookie shapes onto a parchment paper-lined cookie sheet.

Step 7: Bake the cookies for 10-11 minutes, depending on the size and thickness of your cookies. Move them to a cooling rack.

Do not ice your cookies until they are fully cooled.

Step 8: Let’s make the royal icing. It is really easy to make, but it is definitely easier to make with a stand mixer and a whisk attachment. (Your arms can get tired if you use an electric mixer.)

Step 9: Add the royal icing ingredients to a large bowl (if you are using an electric hand mixer) or to the bowl of a stand mixer with a whisk attachment. Whip up your homemade royal icing by starting on low speed.

Mix for 9-10 minutes. The icing should not be runny when you are done mixing!

Step 10: Add a little royal icing to several bowls. Use your food color to turn the royal icing into the colors you want.

Step 11: When decorating cookies with royal icing, think in layers. I first used white icing and piped it around the edges of the cookies and rainbow sections. Let the white icing dry before adding the next color!

If you plan to make sections of the same color as these rainbows, add royal icing to one section, then let that section dry. This will leave indentations or lines between the sections. You can see more examples of how to decorate in this way in my Gluten Free Halloween Cut-Out Cookies post.

Step 12: Let the cookies sit until the icing has hardened. This will take several hours depending on how thick you painted the royal icing onto the cookies.

Recipe FAQ:

If you enjoy the cinnamon flavor, you can use this Gluten Free Cinnamon Sugar Cookie recipe as the base for decorating. You can also use shortbread as a base, like in these Gluten Free Maple Shortbread Cookies.

Easter is around the corner, so be sure to check out these Gluten Free Easter Cookies too.

More Gluten Free Cookies Recipes:

• Gluten Free Cookies and Cream Cookies
• Easy Gluten Free Animal Cookies (aka circus cookies)
• Drop style Gluten Free Sugar Cookies
• Gluten Free Cowboy Cookies