If you love Whoopie pies and rainbows, you are in for the best treat! These Cake Mix Whoopie Pies are easy to make and taste delicious. Plus they make the prettiest dessert for any birthday party.
Rainbow Whoopie Pies

Cake Mix Whoopie Pies
These Whoopie Pies with Cake Mix make the best Unicorn snacks or Mermaid sandwich cookies and your kids will think you made the best tasting and best-looking snack.
You can make it look like you spent hours baking in the kitchen when these little bites of yumminess are made with boxed cake mix and done in 15 minutes.
Funfetti Whoopie Pies
What you will need to make these Rainbow Whoopie Pies is in this picture below. However, I have it displayed in a recipe list form to print out towards the bottom of the page.
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Easy Recipe for Whoopie Pies
Start by combining the cake mix, egg, and butter in a medium bowl. Beat it together until it’s mixed well. I like using a hand mixer best, it’s easy to clean and gives a creamy batter versus just using a fork or spoon.

Gently stir in the sprinkles using a spoon adding as many as you would like.

Roll it into about 1-inch balls and place them on a cookie sheet. Lightly press the cookies down about halfway with the bottom of a cup, and bake them for 8-10 minutes on 350 degrees.

Divide the frosting and mix in 3 or 4 colors of your choice. Place each color of frosting into a plastic baggie, and snip the corner off to use for piping.

When your cake cookies are cooled down completely you are ready to add the icing.
Pipe a round mound of frosting on the bottom of one cookie and gently press another cookie on top of it. Repeat this until all the cookies are frosted and topped with another cookie.

Serve these pretty

Cake Mix Cookie Supplies

Funfetti Whoopie Pies are adorable, super tasty, and so easy to make!
Whoopie Pies with Cake Mix

We love everything Funfetti, rainbow, and sprinkles and these delicious whoopie pies fit all of the things we love. Who doesn’t love eating rainbow treats?!
PIN THESE FUNFETTI WHOOPIE PIES TO SAVE

These Cake Mix Whoopie Pies are soft, moist cake cookies sandwiched with a fluffy icing filling. Delicious!
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Studies have shown that you will also love the following recipes if you like this. I have pulled them together for you right here!
Funfetti Cake Cookies

Rainbow Whoopie Pies
Cake Mix Whoopie Pies
Ingredients
- 1 box White Cake Mix
- 1 container Whipped White Frosting
- 1 lg Egg
- 1 stick Stick Butter, softened
- food coloring
- Rainbow Nonpareils or Sprinkles
Instructions
- Preheat oven to 350 degrees.
- Combine the cake mix, egg, and butter in a medium bowl. Beat together until well mixed.
- With a spoon, gently stir in the sprinkles, adding as many as you would like.
- Roll into about 1-inch balls and place on a cookie sheet. Lightly press the cookies down about halfway with the bottom of a cup, and bake for 8-10 minutes.
- Remove from oven and cool completely.
- Divide the frosting and mix in 3 or 4 colors of your choice. Place each color of frosting into a plastic baggie, and snip the corner off to use for piping.
- Pipe a round mound of frosting on the bottom of one cookie and gently press another cookie on top of it. Repeat this until all the cookies are frosted and topped with another cookie.
- This recipe will make approximately 10 whoopie pies.
Tried this recipe and loved it. So easy and delicious. Would like to know of any flavor box mix can be used using this recipe?
I’m so happy to hear that. You can definitely switch it up and use your favorite cake flavors
Hi,
I was wondering why not use Funfetti cake mix instead of white? Also, how many days in advance can I make these and keep at room temperature in a Tupperware?
Yes! I have used Funfetti cake mix too and it works great. They keep for a few days.
Do you grease your cookie sheet or use parchment paper?