Cake Mix Blondies use ingredients you have at home and only take 30 minutes to bake. They’re the perfect snack for parties and have colorful sprinkles kids love.
Cake Mix Blondies are rich, chewy and full of flavor. When you don’t have time to make them from scratch, this great recipe comes in handy. These blondies are easy to make with ingredients in your pantry. Need a dessert for a party or bake sale? One of the best things is that blondies are an easy delicious treat to package and quick to make for any time of year.
Did you know that the first brownies were blondies? A decade before cocoa was added to brownies, they were made with molasses and butterscotch flavored. Now, we have delicious blondies made with a box of yellow cake mix!
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What We Love About This Recipe
- 40 Minute Dessert: It doesn’t take much time, only takes 10 minutes to prep, and 30 minutes to bake.
- Easy Ingredients: Only six ingredients that are likely already in your pantry.
- Family Friendly: Just mix and bake. Perfect treat to make with kids, and have some good times to remember.
- Make Ahead: Make ahead of time for birthday parties or gatherings.
- Party Favorite: Easy to double and quick to make.
Ingredient Notes
- Heavy Cream: The batter will seem too thick, but do not add extra heavy cream. The thick batter helps make a dense and chewy bar.
- White Chocolate Chips: If you don’t have white chocolate chips, substitute peanut butter or butterscotch chips instead.
- Yellow Cake Mix: If you have it in your pantry, try a vanilla boxed cake mix for your blondies.
Variations and Substitutions
- Rainbow Sprinkles – Substitute chocolate sprinkles if you don’t have rainbow.
- Heavy Cream – Use 1/3 cup of milk in place of heavy cream. Less is better so the batter remains thick.
How to Make Blondies with Cake Mix
These are the basic steps for making funfetti blondies. Please refer to the recipe card below for more detailed instructions.
STEP 1: PREP
Preheat oven to 350 degrees and grease a 9×12 or 8×8 pan using cooking spray.
STEP 2: MIX
Using a wooden spoon, mix the entire box of cake mix and 1/2 cup of sprinkles together in a large bowl. Then, mix in the egg, oil, and heavy cream until fully combined.
STEP 3: CHOCOLATE CHIPS
Fold white chocolate chips into the mixture.
STEP 4: DECORATE
Scoop batter into the prepared pan and flatten it into a sheet using a rubber spatula. The batter should be thick and pliable. Add the remaining sprinkles to the top of the batter.
STEP 5: BAKE
Bake for 20-30 minutes until the edges are golden brown. The center may be gooey.
STEP 6: COOL
Let cool for 45 minutes to an hour before cutting into squares.
Prep and Storage Tips
HOW TO MAKE THIS RECIPE AHEAD OF TIME
This chewy blondies recipe is best served fresh, but you can bake them ahead of time and store in an airtight container in the fridge. Wrap squares individually in plastic wrap if baking ahead of time for a bake sale or party.
HOW TO STORE THIS RECIPE
Store this simple dessert in an airtight container at room temperature for up to three days, or in an airtight container in the fridge for a week.
HOW TO FREEZE THIS RECIPE
Store this easy dessert recipe in an airtight container for up to three months in the freezer
HOW TO REHEAT THIS RECIPE
Blondies are best served at room temperature, but you can reheat them in the oven at 350 degrees for 10 minutes and serve with vanilla ice cream to make this one of your family favorites.
Frequently Asked Questions
If the center isn’t cooking fast enough, cover them with foil for even heat distribution while baking.
Use a probe thermometer to check if they have an internal temperature of 200-205 degrees. This will ensure they’re fully cooked, but also moist.
Blondies are easy to overbake and turn out dry and crumbly. When the 30-minute timer goes off, take them out even if the center is gooey. They will harden as they cool.
While similar, a brownie is chocolate favored while blondies are vanilla or butterscotch.
Expert Tips for Making This Recipe
- This Recipe Can be Doubled: This is an amazing recipe for events and bake sales, and will be one of everyone’s favorite desserts. Simply increase the ingredients proportionately and split into multiple pans before baking. Cut into squares once cooled for an easy snack.
- Don’t Overbake: If the center is gooey after the baking time, take them out. After 30 minutes of cooling these white chocolate blondies will be chewy and easy to cut.
- Cloudy Batter: Some sprinkles, such as black or other colors, bleed if they are left in the batter too long before baking. Look for confectioners glaze in the ingredients list when purchasing sprinkles. This prevents the dyes from bleeding into the batter.
What to Serve with Blondies with Cake Mix
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Easy Cake Mix Blondies
Equipment
- 9X12 Cake Pan
Ingredients
- 15.25 ounce box Betty Crocker Yellow Cake Mix
- ½ cup + 1 tablespoon of rainbow sprinkles
- 1 egg
- ½ cup heavy cream
- ¼ cup vegetable or canola oil
- 6 ounces white chocolate chips
Instructions
- Preheat oven to 350 degrees and grease pan.
- In a large bowl, mix the entire box of cake mix with ½ cup of sprinkles.
- Mix in oil, egg, and heavy cream until well combined.
- Add in white chocolate chips.
- Scoop batter inside a greased 9×12 or 8×8 pan and flatten. Batter should be thick.
- Top with remaining sprinkles.
- Bake for 20-30 minutes until the edges are brown and a toothpick comes out clean when inserted into the middle. The center may be gooey.
- Cool the bars completely for about 45-60 minutes before cutting them.
Expert Tips
- This Recipe Can be Doubled: This is an amazing recipe for events and bake sales, and will be one of everyone’s favorite desserts. Simply increase the ingredients proportionately and split into multiple pans before baking. Cut into squares once cooled for an easy snack.
- Don’t Overbake: If the center is gooey after the baking time, take them out. After 30 minutes of cooling these white chocolate blondies will be chewy and easy to cut.
- Cloudy Batter: Some sprinkles, such as black or other colors, bleed if they are left in the batter too long before baking. Look for confectioners glaze in the ingredients list when purchasing sprinkles. This prevents the dyes from bleeding into the batter.
Thank you so much for sharing this amazing recipe! Will surely have this again! It’s really easy to make and it tasted so delicious! Highly recommended!