Funfetti Shortbread Sandwich Cookies with Frosting
4.17 from 12 votes
These funfetti shortbread sandwich cookies are soft, buttery, and packed with sprinkles. Each one is filled with a dollop of buttercream frosting for the perfect bite-sized treat. They're easy to make, freezer-friendly, and ideal for birthdays or any occasion!
In the bowl of a stand mixer fitted with a paddle attachment, cream the softened butter until light and fluffy, about 2-3 minutes. Add in the vanilla extract and heavy cream, mix to combine.
1/2 cup Unsalted butter, 1 tbsp Vanilla extract, 1 tbsp Heavy cream
With the mixer on low add in 1/2 a cup of powdered sugar at a time, mixing until combined each time. Scrape down the sides occasionally. Continue to add powdered sugar until you have reached a desired consistency, you may not need it all.
2 1/2 - 3 cups Powdered sugar
If your frosting is too thick, add more cream, if it is too thin, add more powdered sugar, about 1 tablespoon at a time. If desired, use food coloring to achieve a color of choice.
Food coloring
For the Shortbread Cookies:
In a small mixing bowl combine the flour, baking powder, baking soda, cream of tartar, and salt. Stir to combine, set aside
In the bowl of a stand mixer fitted with a paddle attachment, cream the butter and sugar on medium speed until fluffy, 3-4 minutes. Add in the vanilla and almond extract, and the egg. Scrape down the sides.
Add in the dry ingredients and mix on low until combined. Gently mix in the funfetti sprinkles.
1/2 cup Funfetti sprinkles
Transfer the dough out onto a clean, lightly floured surface. Roll out to 1/4" thick. Using a cookie cutter, cut the dough into shapes. Re-roll the remaining dough and continue cutting until all dough is used.*
Arrange the cookies on the prepared baking sheets, about 2 inches apart. Chill for 45-60 minutes.
Preheat oven to 350°F. Line baking sheets with parchment paper and set aside. Once cookies have chilled, remove from the fridge and bake at 350 for 7-9 minutes.* Allow to cool on the baking sheets before transferring to a cooling rack.
Once the cookies have cooled completely, pipe or spread on the buttercream, sandwiching together. Store in an airtight container for 3-4 days.
Notes
*Baking time is dependent on the size of the cookies, I would start with 7 minutes and increase baking time as needed. Smaller bite-sized cookies will need less time and larger cookies, additional time.