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These Cake Mix Cookie Bars are the best funfetti gooey bars you will ever make! They are made with cake mix and then add white chocolate chips and sprinkles – you can’t go wrong. This is my first ever viral recipe – can you see why?

stacked funfetti bars with white chocolate chips and colorful sprinkles baked in.


Funfetti Gooey Bars

These gooey bars are one of my favorite sweet treats, especially these funfetti ones: I can never get enough sprinkles! I made mine with cake mix because it makes the recipe easier and the sweetened condensed milk puts the ‘gooey’ into gooey bar!

This is the first recipe of mine that went truly viral on all social media – and the blog. Can yo see why? There is nothing bad about this recipe – the batter has the taste of cake – with colorful sprinkles. This is one of my favorite easy dessert recipes in the entire world!

Ingredients Needed

  • Yellow Cake Mix: You can use any brand – but make sure it’s approximately 15 ounces. (I’ve also made this recipe with red velvet cake mix!)
  • Butter: I always use unsalted butter – make sure it’s room temperature (softened)
  • Sprinkles: Can’t have funfetti without the sprinkles! I use rainbow jimmies – be sure to use a high quality brand so they don’t melt in your batter. You can use any colors.
  • Sweetened Condensed Milk: Regular or nonfat can be used.
  • White Chocolate Chips: These can be omitted, or you can use chocolate to make chocolate chip cookie bars!
process shot of funfetti gooey bars being made.
process shot of funfetti gooey bars being made.
process shot of funfetti gooey bars being made.
process shot of funfetti gooey bars being made.
process shot of funfetti gooey bars being made.

How to make Cake Mix Gooey Bars

  • Add cake mix, butter, and egg to a large bowl. Mix with a hand mixer (you can also use a stand mixer). It will take awhile to mix the dough together (longer with a hand mixer) but it will turn into a thick cookie dough.
  • Press about half to two-thirds of the dough into the bottom of your baking dish with your rubber spatula or hands. Pour sweetened condensed milk over the top of the dough, leaving a thin border around the edges. Sprinkle with white chocolate chips.
  • Separate remaining dough into small balls and evenly space over the top of the bars. Press down to flatten. Try to seal the edges as much as possible.
  • Bake bars for about 25-30 minutes, or until they just begin to get golden brown around the edges. Cool completely before slicing, otherwise the mixture will be too gooey to cut.
stacked funfetti bars with white chocolate chips and colorful sprinkles baked in.

Expert Tips

  • Recipes that use cake mix are so fun because you can make other recipes with different flavors of cake mix! I love making gooey bars with chocolate cake mix, white cake mix, even lemon cake mix or strawberry cake mix!
  • I do not recommend using nonpareils because they often dissolve during baking.
  • Bake these in a pan lined with foil or parchment paper for easy removal. They’re super gooey!
  • Be sure to allow them to cool completely before slicing.
  • Storage: Store in an airtight container or covered with plastic wrap. If you are going to put them in the freezer, slice them before freezing so they are easy to grab and defrost when the craving hits.

FAQs

Can you freeze these gooey bars?

Yes you can! Freeze them in an airtight container for up to 3 months.

stacked funfetti bars with white chocolate chips and colorful sprinkles baked in.

Funfetti Gooey Bars Recipe

4.98 from 35 votes
These Funfetti Gooey Bars are the best cake mix cookie bars ever! Made with a cake mix and a few simple ingredients, they are gooey to the max!
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Yield 12 bars
Serving Size 1 bar
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Ingredients
 

  • 1 box (approx 15 ounces) yellow cake mix
  • ½ cup (113g) unsalted butter, softened
  • 1 large egg
  • ⅔ cup sprinkles
  • ½ cup sweetened condensed milk
  • 1 cup (170g) white chocolate chips
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Instructions

  • Preheat oven to 350°F. Line a 9×9” pan with foil and spray liberally with cooking spray.
  • Add cake mix, butter, and egg to the bowl of an electric mixer fitted with a paddle attachment. (You can also use a hand mixer.) Mix until a thick dough forms. This will take a long time, especially if you're using a hand mixer. Just keep mixing! Add sprinkles and stir until incorporated.
  • Press about ½-⅔ of the dough into the bottom of the prepared pan.Pour sweetened condensed milk over the top of the dough, leaving a thin border around the edges. Sprinkle with white chocolate chips. Separate remaining dough into small balls and evenly space over the top of the bars. Press down to flatten. Try to seal the edges as much as possible.
  • Bake bars for about 25-30 minutes, or until they just begin to brown. Cool completely before slicing, otherwise the mixture will be too gooey to cut.

Recipe Notes

  • Use higher quality jimmies so they don’t melt – any color can be used. Do not use non-pareils.
  • Wait until they’re cool to cut.
  • I recommend baking in a metal pan with foil or parchment paper for easy removal.

Recipe Nutrition

Serving: 1bar | Calories: 233kcal | Carbohydrates: 24g | Protein: 2g | Fat: 14g | Saturated Fat: 9g | Cholesterol: 43mg | Sodium: 37mg | Potassium: 96mg | Fiber: 1g | Sugar: 24g | Vitamin A: 297IU | Vitamin C: 1mg | Calcium: 71mg | Iron: 1mg
Nutritional information not guaranteed to be accurate
Course Dessert
Cuisine American
Author Dorothy Kern

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Gooey Bar Variations

  • Use any flavor cake mix
  • Swap out the white chocolate chips with peanut butter chips, butterscotch chips, chocolate chips!
  • Skip the sprinkles – leave the batter plain or use mini chocolate chips or nuts or chopped candy.
  • Make these with a funfetti cake mix and you don’t need to add sprinkles to the dough.

Other Gooey Bar Recipes

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Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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4.98 from 35 votes (29 ratings without comment)

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200 Comments

  2. These are so cute and they do look pretty amazingly gooey. I’d love to try them. I, also, hardly ever make the same thing twice. There are just too many amazing recipes to try. This one is going on my ridiculously long list.

    Reply

  3. I made these last night. They are yummy but don’t look anything like they should. It hasn’t risen quite the same (they sunk when they came out of the oven) and the colours of the sprinkles seem to have melded and looks a little messy.
    Any idea what I have done wrong?

    Reply

    1. I’m sorry! The sinking…I’m not sure about. We’re in a pretty dry area, so are you somewhere more humid? Could be something with the cake mix too. With the sprinkles, I always use jimmies (the long thin kind) because they don’t melt like some other kinds do (like nonpareils and such). I use the tub you find at Walmart for the most part. Possibly all sprinkles aren’t created equal in that way? I hope they tasted good anyway! In a pinch you can cover them with fresh sprinkles…no one will notice the defaults!

      Reply

      1. I am in Brisbane, Australia so could be that 🙂 It was the hit at both work and school (as I did 2 batches). Was soooo yum 🙂 I guess that means I’ll just have to make it again to try and get it right 😉

  5. Oh yum! These sound and look delicious! I can see why you made them twice in one week 😉

    Reply