These Curmbl funfetti milkshake cookies are the cookie that Crumbl released to celebrate their 4th birthday. It is served chilled and takes out of this world.
Preheat the oven to 350F then line a baking sheet with parchement paper and set it aside.
Cream the butter, granulated sugar, and powdered sugar together until smooth and creamy.
Whisk in the egg, and the vanilla extract and mix until combined.
Mix in the flour, baking powder, salt until the flour mixture disappears. Don't overmix your dough. Then using a large cookie scooper scoop out 6 equally sized cookie dough balls, roll them between the palm of your hand, roll them in the sprinkles, and place them on the prepared baking sheet and gently flatten them to about ¾ inch in thickness.
Bake the cookies in the oven for 11 minutes, then let them cool down on the baking sheet for 10-15 minutes before transferring to a cooling rack to cool down fully.
Make the cake flavored buttercream
In a stand mixer bowl or a large bowl, cream the butter until smooth and fluffy.
Add in the powdered sugar and cake batter extract, and heavy cream, and whip for 5-8 minutes, start slow then increase the speed.
Frost the cookies with the buttercream, then top with a dollop of whipped cream.