Funfetti Cookie Bars

If you like this recipe, please share!

If you enjoy surprising your kids with treats after school, these Funfetti Cookie Bars are fun and festive. They also travel well for a summer potluck party too.

Pin Funfetti Cookie Bars to make later.

Four funfetti cookie bars on a white platter.

Ingredients for cake mix cookie bars

Yes, these funfetti cookie bars start with a cake mix but that can be our dirty little secret.

  • Yellow Cake Mix – use your favorite brand.
  • Egg – you’ll need the large vareity.
  • Milk – whole or 2% works best.
  • Vegetable Oil – not olive oil, use a salad, or neutral, oil
  • White Chocolate Chips – you could use chocolate chips to mix things up.
  • Rainbow Sprinkles – Any color will do but you need the jimmies or long sprinkles. You don’t want to use nonpareils.

Before making this recipe make sure you have the correct size pan. You need a 15 x 10 x 1 jelly roll pan.

What is a jelly roll pan?

These funfetti cookie bars are made in a jelly roll pan, also known as a rimmed baking sheet. You may also know it as a cookie sheet with sides.

Cookie bars ingredients.

This post may contain affiliate links. As an Amazon associate, an Instacart Tastemaker, as well as a member of other various affiliate programs, I earn a nominal commission if products are purchased through links at no additional charge to you.

After my kids went back to school, I wanted to make a new treat for them when they came home “starving”. I was looking for really easy and also did not want to go to the store for any ingredients. I know, a tough bill to fill.

So, I took to my copy of the Simple & Delicious Cookbook. This recipe spoke to me…easy, cake mix, white chocolate chips, jimmies (or sprinkles). Lo and behold, I had all of the ingredients so I set off to make it.

Change up the jimmies (you may call them sprinkles), using red, green, and white for Christmas or pastels for spring.

Sprinkle cookie bars in a pan.

Why You’ll Love This Recipe

  • It’s a super easy recipe that uses ingredients already on hand.
  • It starts with a cake mix.
  • Just six total ingredients.
  • They can be ready in less than 30 minutes.
  • Sprinkles! Who doesn’t love a treat with sprinkles?!

Tips and Tricks to Making Funfetti Cookie Bars

  • Using a yellow cake mix makes this recipe more flavorful. You could choose to use a butter yellow cake mix but I don’t suggest a white cake mix. White cake mixes are softer when made. Yellow has more substance which you need with the addition of the white chocolate chips and jimmies, also known as sprinkles.
  • Make sure all ingredients are at room temperature.
  • It’s OK to use whole or 2% milk. I have used both of these when I’ve made this recipe. I have not tried this recipe with non-dairy milk products.
  • You may also know these treats as funfetti cake bars due to the addition of the sprinkles. These cake bars travel well making them perfect for a potluck party.
Funfetti Cookie Bars on a white platter.

More Recipes That Start with a Cake Mix

I love using a cake mix to make cookies and other treats. These funfetti cookie bars are just one example. Use a chocolate cake mix for these chocolate cake mix snickerdoodles. Chocolate Oreo bars and chocolate sprinkle cookies start with a Devil’s food cake mix.

Use a white cake mix for Lemon Oreo bars and yellow cake mix cookies use, well, a yellow mix.

What Are Sprinkles Made Of?

The simple answer is a number of things including sugar, corn syrup, cornstarch, wax, and artificial flavors, though rainbow sprinkles really don’t have any flavor. Chocolate ones have the addition of cocoa and mildly taste like chocolate.

Did you make this recipe? If so, please leave a comment and 5-star review on the recipe card below. If you really love this recipe, please share it on your social media!

Funfetti Cookie Bars

Easy funfetti cookie bars have sprinkles in the batter and start with a cake mix.
5 from 13 votes
Prep Time5 minutes
Cook Time18 minutes
Total Time23 minutes
Course: Desserts and Sweets
Cuisine: American


  • 1 yellow cake mix I used Duncan Hines
  • 1 large egg
  • 1/2 cup 2% milk
  • 1/3 cup canola oil
  • 1 cup white baking chips
  • 1/2 cup mulit-color jimmies sprinkles


  • Preheat oven to 350 degrees F. In a large bowl, combine the yellow cake mix, egg, milk and oil. Stir in white baking chips and jimmies. Spread into a greased 15x10x1 – inch baking sheet.
  • Bake 18 – 20 minutes or until a toothpick inserted in the center comes our clean. Cool completely in pan on a wire rack. Cut into bars.
  • To freeze the bars: Freeze in freezer containers. Thaw in covered containers before serving.

Recipe Notes

The number of bars you get will depend on the size you cut them.

Similar Posts


  1. 5 stars
    I just love making cookie bars. They’re so much quicker to make and delicious to eat. These cake box cookies couldn’t have been easier or more fun to serve with sprinkles!

  2. My kids would be thrilled to have these as an after school treat – or anytime! I need to start keeping some cake mixes on hand.

  3. I need to have more fun with cake mix. I’ve got lots of sprinkles and such, and grand kids who love stuff like this.

5 from 13 votes (12 ratings without comment)

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating