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S’mores Cookies – Leprechaun Hats – Marshmallow St. Patrick’s Day Cookie

These St. Patrick’s Day cookies are as much fun to make as they are to eat. It’s time for some luck of the Irish with these adorable s’mores cookies made with chocolate and marshmallows.

I love fun and easy holiday recipes that tell the story of the celebration by the look of the sweet treat. Desserts like this set the mood for a party and are so whimsical.

If you want to learn more about the leprechauns that inspired this dessert recipe, make sure to check out our post on St. Patrick’s Day symbols

This St. Patrick’s Day sweet treat could not be easier to assemble. I made them with Girl Scout cookies!

Since it is Girl Scout cookie time in most areas of the country, my favorite Girl Scout cookie – the thin mint – gets transformed into a fun holiday cookie. (See more recipes using Girl Scout Cookies here.)

St. Patrick's Day Cookies shaped like hats on a white plate with words reading "Leprechaun S'mores Hats."

It’s fun to make cute food projects for St. Patrick’s Day. It’s a great way to set the mood. Try these Bailey’s Irish Cream Truffles for another tasty holiday dessert.

These leprechaun hat s’mores cookies are like gold at my house, and fortunately you don’t have to go to the end of the rainbow to find them! 

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It's s'mores cookie time - Irish style! These St. Patrick's Day cookies are made with Girl Scout cookies, marshmallows and chocolate chips for a fun holiday treat. Get the recipe on Always the Holidays. #stpatricksdaycookie #smores… Click To Tweet

To make the s’mores cookies you will these suppliesGirl Scout thin mints, shamrock sprinkles, coconut oil, green gel frosting, marshmallows and chocolate chips in bowls.

Gather your ingredients to make these adorable sweet treats:

  • Girl Scout Thin Mints
  • Large Jet Puffed Marshmallows
  • Wilton Green Sparkle Gel Icing
  • Mini Shamrock Sprinkles
  • Semi Sweet Chocolate Chips
  • Coconut Oil

Dipping station for your St. Patrick’s Day cookies

Start by making a dipping station with your supplies. I like to make a sort of production line when I make treats like this.

It makes the whole process go much more quickly when you are at the decorating stage. Girl Scout cookies, melted chocolate, green sprinkles, marshmallows and green gel frosting.

Melt the chocolate with the coconut oil in the microwave by heating for 30 second intervals and stirring until it is silky smooth.Chocolate chips and coconut oil in a bowl and melted chocolate/

It’s time to dip the marshmallows for our s’mores cookies

Spear each marshmallow with a fork and dip it into the melted chocolate.

I used a candy tipping tool set. The prongs of the forks nice and sharp and the three pronged tool makes a great place to rest the marshmallow while the chocolate drips off.Girl scout cookie with shamrock sprinkles and a marshmallow on a metal fork.

Tap off the excess chocolate and place the chocolate covered marshmallows on a silicone baking mat to set.Dipping marshmallows into melted chocolate

Making the leprechaun hats

The leprechaun hats are made in two steps. The hat tops get dipped into the melted chocolate first.

Once all the marshmallows are coated, thin down the chocolate that was left over with some coconut oil.

The reason for doing this it to apply a very thin coating to the Girl Scout chocolate mint cookies to make them match the color of the dipped marshmallows.

Dip the thin mints into this thinner chocolate mixture and place them on a silicone mat.

Chocolate dipped marshmallows and Girl Scout cookies.

Once the marshmallows are set, use a bit of the melted chocolate to join them to the thin mints to make the hat shapes.

Then use the green sparkle gel icing to add a hat band to the leprechaun hats. Green is one of the four St. Patrick’s Day colors, so using it in this dessert makes it even more festive!

Chocolate covered marshmallows and cookies made into leprechaun hats with a green gel band.

The hat band gets decorated with a mini shamrock sprinkle while the icing is still soft. Leprechaun hat cookies on a serving plate

Tasting these s’mores cookies

Time to bite into one of these sweet treats. Mm, Mm – leprechaun hat cookies! It’s almost like having s’mores the Irish way.

These tasty sweet treats have a creamy marshmallow top. The thin mint bottom and little shamrock sprinkle add a nice bite of texture and the chocolate finishes off the taste beautifully.

Take a bite of these Leprechaun hats

See how easy these s’more cookies are to make? They take just minutes which means you can have them on hand any time you like during the holiday period.

May the luck of the Irish be with you while you sample one (or a few!) of these yummy St. Patrick’s day cookie treats.Leprechaun hats

If you’re serving these leprechaun s’mores hat cookies to your kids, don’t forget to check out our free printables for the holiday. The whole family will love to solve our St. Patrick’s Day word search and St. Patrick’s Day word scramble

Pin these St. Patrick’s Day cookies

Would you like a reminder of these chocolate marshmallow s’mores cookies? Just pin this image to one of your St. Patrick’s Day boards on Pinterest so that you can easily find it laterLeprechaun hat cookies on a plate with text overlay reading " 'S'mores cookies for St. Patrick's Day."

If baked cookies are more your thing, be sure to check out Baked Cookies Day for some inspiration and recipes.

Admin note: This post first appeared on the blog in February of 2017. I have updated the post to add new photos, a printable recipe card with nutritional information and a video for you to enjoy.

Yield: 12 leprechaun hats

S'mores cookies - Chocolate Marshmallow St. Patrick's Day Treats

Leprechaun hats

It’s time for some luck of the Irish with these adorable s'mores cookies in the shape of leprechaun hats. They are made with chocolate and marshmallow. It’s almost like having s’mores the Irish way.

Prep Time 30 minutes
Total Time 30 minutes


  • 12 Girl Scout thin mint cookies
  • 12 large jet puffed marshmallows
  • Wilton green sparkle gel icing
  • 12 mini shamrock sprinkles
  • 12 oz semi sweet chocolate chips
  • 1 1/2 tsp coconut oil, divided


  1. Melt the semi sweet chocolate with 1 teaspoon of coconut oil in the microwave, in 30 second intervals stirring often until the chocolate is melted and silky smooth.
  2. Dip each marshmallow into the melted chocolate and coat it thoroughly. Tap the tool to shake off any excess. Set the coated marshmallow on a baking mat until the chocolate is completely set.
  3. Thin down the left over chocolate with 1-2 tsp of coconut oil and dip the girl scout cookies so the chocolate color matches. Let them set completely.
  4. Add a bit of the melted chocolate in the middle of the Girl Scout cookie and attach the marshmallow so the two form a hat shape.
  5. Once the hat has set, use the green sparkle gel to make a rim around the joint as a hat band.
  6. Add a mini shamrock to decorate the hat brim while the icing is still soft.


This cute sweet treat is inspired by one that I first saw on The Cake Blog.

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Nutrition Information:



Serving Size:

1 hat

Amount Per Serving: Calories: 197Total Fat: 12gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 0mgSodium: 40mgCarbohydrates: 26gFiber: 2gSugar: 20gProtein: 2g

Nutritional information is approximate due to natural variation in ingredients and the cook-at-home nature of our meals.

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