Big Funfetti: Funfetti Cake Mix Cookie Sandwiches for Serious Eats

Cookie sandwiches involve so much awesome. In one single unit, you to get two cookies and delicious filling, and you get to eat them all at once.

But there's always room for more awesome at the cookie sandwich party, as I learned when I prepared a batch of sweet sandwiches using Betty Crocker's Cooky Book and the finest of cake mixes—the kind with a built-in rainbow. What better pick-me-up for dull winter days than a double dose of dense, moist, lightly tangy, cakey cookies sandwiched with rich, sweet, buttery frosting?

Here's the recipe, but you can also find it (and more) over at Serious Eats!

Funfetti Cake Mix Cookies


For the cake mix cookies

  • 1/4 cup butter, softened
  • 1 package (8 ounces) cream cheese
  • 1 egg
  • 1/4 teaspoon vanilla
  • 1 package funfetti or rainbow chip cake mix

For for the filling (optional):

  • 1 1/2 sticks of butter
  • 1 teaspoon vanilla
  • 2 to 4 cups confectioners' sugar, depending on your desired consistency



  1. Preheat oven to 350°F. Note: the original cookie recipe called for 8 to 10 minutes at 375°F, but I found that baking slightly longer at 350°F worked better for my cookies.
  2. Cream the butter and cream cheese. Blend in egg and vanilla.
  3. Add cake mix in two parts, mixing well (it will be a super thick batter—if it is too stiff, add a small quantity of heavy cream to the batter and mix well).
  4. Using a small cookie scoop, drop balls of cookie dough on an ungreased baking sheet. Leave about 2 inches between the cookies.
  5. Bake for 8 to 12 minutes, or until lightly browned. Cool cookies for at least 15 minutes on the cookie sheet before transferring to a wire cooling rack; the cookies are very delicate when they first come out of the oven and they will break if you try to transfer them too soon.
  6. Once completely cool, add a generous dollop of frosting to the bottom of half the cookies, and then sandwich the rest of the cookies on top to form something that vaguely resembles a whoopie pie, but tastes like something else entirely.
  7. If you want the filling, go ahead and prepare it by mixing the butter until fluffy in your electric mixer; add the vanilla and then the confectioners' sugar, bit by bit, until it has reached your desired consistency. Thin with cream or milk if desired, and adding a few drops of pink food coloring never hurts.