Funfetti Whoopie Pies with Cake Mix

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Whoopie Pies are such a yummy and simple treat the whole family will love. The fact they are versatile also makes them perfect anytime! If you are looking for a fun and yummy new treat to serve up at your next party, this is it! Funfetti Whoopie Pies are a fun dessert that works great for any holiday or event.

Rainbow Sprinkles Whoopie Pies

How to Make Funfetti Whoopie Pies with a Cake Mix

These cake-like little sandwiches are delightful bites of heaven. Regardless if you call them Rainbow Whoopie Pies, Funfetti Whoopie Pies, or Unicorn Whoopie Pies, just plan on making these soon! This whoopie pie recipe is easy and fun to make with the kids.

One of the reasons this has become my favorite whoopie pie recipe is that it uses a boxed cake mix. Don’t get me wrong, I do love baking from scratch, but sometimes semi-homemade items work just as well, if not better. Another reason I love this recipe is that it is filled with sprinkles!

These yummy little treats would also make the perfect birthday treat!

Why Make This Recipe

You should totally make this recipe because it’s

Easy – this goes together quickly.

Versatile – works great for any occasion or holiday.

Budget-friendly – you probably already have all of the ingredients that you need.

Expert Tips, Ingredient List and Suggestions for Recipe Success

You will find a complete breakdown in the recipe card below of all of the ingredients needed to make this recipe.

  • White cake mix – any brand is fine. Also, you can use any flavor. I just prefer to use white to make this recipe so the rainbow sprinkles really pop.
  • Butter – unsalted is always best. However, when I made this recipe, as you see, I only had salted butter so I used that. You may or may not notice a difference in the taste. However, when possible, always use UNSALTED butter when baking.
  • Frosting – I think the whipped frosting works the best.

Why Do They Call Them Whoopie Pies?

It’s not what you think!  It’s honestly because, according to legend, when kids would find these delicious treats in their lunch boxes, they would yell, “Whoopie!”  Originally these were also made from leftover cake batter.

Where Did They Originate?

It is believed that they originated in Pennsylvania Dutch country.

What is the Difference Between a Whoopie Pie and a Moon Pie?

Whoopie pies are formed from two pieces of cake.  There is a lot of fluff in the middle.  Moon pies, however, are more like a cookie and also contain graham crackers.

What are They Called in Pennsylvania?

They are called “gobs”.

Step by Step Directions

You will find a complete breakdown of the recipe as well as the steps below in the recipe card that is at the bottom of the post. However, I have included a few in-process photos as well as steps for your reference.

Step 1. Turn the oven to 350 degrees to preheat.

Step 2: Place parchment paper or silicone mats on two baking sheets and set aside.

Mixing cake mix, egg, and butter together.
Mixing cake mix, egg, and butter together.

Step 3: Next, add the cake mix, unsalted butter, and egg into a medium bowl. Turn the mixer on medium speed and mix well.

Step 4: Gently fold in the sprinkles.

Whoopie pie cookie dough pressed on a baking sheet
Whoopie pie cookie dough pressed on a baking sheet

Step 5: Scoop out the dough and roll them into 1-inch balls. Then place them onto the prepared cookie sheets. Using the bottom of a measuring cup, gently press the cookies down about halfway.

Step 6: Bake for approximately 8 to 10 minutes or until the edges begin to lightly brown.

Step 7: Remove from oven and place them on a wire rack to cool.

Adding food coloring into frosting
Adding food coloring into frosting

Step 8: Divide the frosting into small bowls and color them however you prefer. Then put the frosting into piping bags.

Piping frosting
Piping frosting

Step 9: Pipe some frosting onto the bottom of a cookie, then top that cookie with another cookie. Repeat the process until they are all done.

Finished Whoopie Pies
Finished Whoopie Pies

Unicorn Bark

Unicorn Cupcakes

Rainbow Sprinkles Whoopie Pies

Funfetti Whoopie Pies

MomSkoop Staff
Funfetti Whoopie Pies are such a yummy and simple treat the whole family will love. The fact they are versatile also makes them perfect anytime!
5 from 3 votes
Prep Time 10 mins
Cook Time 10 mins
Total Time 20 mins
Course Cookies, Dessert
Cuisine American
Servings 10
Calories 148 kcal


  • Spoon
  • Medium bowl
  • Hand Mixer
  • Baking Sheet


  • 1 Box White Cake Mix
  • 1 Container Whipped White Frosting
  • 1 Egg
  • 1 Stick Butter softened
  • Food Coloring
  • Rainbow Pareils Sprinkles


  • 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 will make about 10 whoopie pies.


Serving: 1gCalories: 148kcalCarbohydrates: 9gProtein: 1gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 5gCholesterol: 43mgSodium: 121mgSugar: 6g
Keyword Funfetti Whoopie Pies, Whoopie Pies
Tried this recipe?Let us know how it was!

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