Brilliantly Green Oreos for St Patrick’s Day

March 17th marks St Patrick’s Day, where it seems as if everything is turned green for 24 hours. And whilst we might indulge in a pint of Guinness and wear a green leprechaun hat for the day, how about also making these fun homemade green Oreo cookie sandwiches??

Who doesn’t like an Oreo? Chocolatey, with a satisfying sweetness and cookie crunch, they’re the perfect sweet treat. And these homemade green versions have an added healthy green twist – spirulina!

Spirulina is nature’s true superfood. Packed with plant-based protein, vitamins, minerals, and antioxidant phytonutrients, spirulina provides many, many essential nutrients. In fact, we see it as a daily vitamin supplement, one that we can add to smoothies, juices and baked goods, instead of relying on a multivitamin tablet.

 This nutritional powerhouse contains the highest amount of complete protein (meaning that it contains all nine of the essential amino acids we need to get from our diet) plus beta carotene, essential fatty acids, bioavailable non-heme iron, antioxidant and anti-inflammatory compounds, among many other nutrients.

 But we hear you, why change the Oreo recipe, it’s just so good as it is! You’ll just have to trust us on this one, and if you don’t try, you’ll never know… Our recipe for homemade Oreo dough lends itself well to being prepared a day in advance so that it has enough time to chill. Of course, this also helps if you are planning on indulging in a Guinness or two, and you find yourself a little bit unprepared in the kitchen.

 Then comes, in our humble opinion, the best bit – decorating your homemade cookie creations!

 Using a tablespoon of spirulina powder in your buttercream filling will give these delicious treats a true green flair that any St Patrick fan will be proud of. Then you’re only limited by your own creativity.

We’ve gone for the traditional nature of round Oreo cookies, but why not use a shamrock-shaped cookie cutter to create the three-leaved clover shapes so synonymous with St Patrick’s Day? Of you could add some little wiggly eyes to really make them come alive or use some bright orange icing to pipe on a leprechaun’s beard?

However you choose to decorate your spirulina Oreo St Patrick’s Day cookies, we know you’ll love them as much as we do. Get the whole family involved, invite your friends and neighbors in and have a whale of a time celebrating. We know we will.

So without further ado, here’s the recipe you’ll need. Enjoy!

Spirulina St. Paddys Day Sandwich Cookies DIY


1 ⅔  cups all-purpose flour 
3/4 cup granulated sugar 
¾  cup unsweetened cocoa
¾  teaspoon kosher salt 
½ teaspoon baking powder 
¾  cup plus 1 Tbsp. butter (softened)
Parchment paper
½ cup (1 stick) unsalted butter, at room temperature
2 cups confectioners’ sugar
2 tablespoons milk
1 teaspoon pure vanilla extract



Prepare Cookies, beat first 5 ingredients at low speed with a heavy-duty electric stand mixer until combined. 

Add butter, 1 Tbsp. at a time, and beat at medium speed just until blended after each addition.

Press dough together with fingers, and divide dough in half. Place each half between 2 sheets of parchment paper, and roll to ⅛ -inch thickness. Chill 30 minutes.

Prepare the filling. In a large bowl, using an electric mixer on medium or a wooden spoon. Beat together with the butter, confectioners’ sugar, milk, and vanilla until light and fluffy, 1 to 2 minutes.

Separate filling into two bowls. Add Spirulina to one and Acai to the other, mix until well combined, adding more powder to reach your desired color. 
Preheat oven to 350 degrees.

Remove and discard parchment paper from the dough. Working quickly, cut dough with a 2-inch round cutter, and immediately place rounds on parchment paper-lined baking sheets. Reroll scraps, and chill 30 minutes before cutting.

Bake cookies on baking sheets at 350° for 6 minutes. Rotate baking sheets front to back, and bake 6 more minutes. Remove from oven to a wire rack, and cool 5 minutes.
Transfer cookies to wire rack, and cool completely (about 10 additional minutes).

Repeat process with remaining chilled dough.
Spoon filling into a zip-top plastic freezer bag. Snip 1 corner of bag to make a small hole. Pipe the desired amount of filling onto 1 cookie, and top with another cookie to make a sandwich.

Repeat with remaining filling and cookies.
spirulina st patricks day cookie recipe