
The best recipe made with a cake mix is our Cake Mix Cookie Bars Recipe!
While cookies are great, this recipe is an easy bar cookie for a crowd! They take no time to make and you don’t even have to roll the individual balls for the cookies.
Recipe Ingredient Notes
To make Cake Mix Cookie Bars, you will need the following ingredients:
- White cake mix
- Canola oil
- Eggs
- Butter, melted
- Milk chocolate chips
- Peanut butter chips
- Sweetened condensed milk
Equipment Needed
For this recipe, you only need a few simple kitchen tools. We recommend using the following equipment:



How to make Cake Mix Cookie Bars
- Preheat oven to 350℉.
- Mix together the cake mix, canola oil and eggs – then separate batter into halves. Press one half of the batter into the bottom of a greased 9×13 pan.
- In a small, microwaveable bowl, mix together the butter, chocolate chips and peanut butter chips. Microwave for 30 seconds, then remove and stir. Keep microwaving and stirring in 15 second intervals until the mixture is completely smooth.
- Add the sweetened condensed milk to the chocolate chip mixture and stir until completely combined, then pour it over the crust in the 9×13 pan.
- Take the second half of the cake mix batter, and drop it in spoonfuls over top.
- Bake for 20-25 minutes (until the top starts to turn a golden brown).
- Allow to cool completely before serving.

Storage Suggestions
If you manage to have any leftover Bars + Brownies, these can store well if prepped appropriately. Once they have cooled completely, here is how you can store it:
- Counter: Store bars and brownies in an airtight container at room temperature for up to 4 days. If your kitchen is particularly warm, consider refrigerating instead to prevent them from getting too soft or melty.
- Refrigerator: Place in an airtight container and refrigerate for up to 1 week. Let them come to room temperature before serving for the best texture and flavor.
- Freezer: To freeze, make sure bars and brownies are completely cooled and unfrosted. Wrap tightly in plastic wrap (or Press & Seal) and then place in a freezer-safe bag or container. For easier portioning, wrap individual squares before freezing. Don’t forget to label with the date. They’ll stay fresh in the freezer for up to 3 months.
Enjoy More Delicious Bar Recipes
There’s nothing better than an easy brownie or bar recipe. Check out our comprehensive list of brownies, bars, and blondies here.
- Congo Bars
- Frosted Graham Cracker Bars
- Frosted Sugar Cookie Bars
- Gooey Golden Grahams S’mores Treats

Cake Mix Cookie Bars Recipe
Ingredients
- 15.25 ounce white cake mix
- ½ cup canola oil
- 2 eggs
- ½ cup butter, melted
- ½ cup milk chocolate chips
- ½ cup peanut butter chips
- 14 ounce sweetened condensed milk
Instructions
- Preheat oven to 350℉.
- Mix together the cake mix, canola oil and eggs – then separate batter into halves. Press one half of the batter into the bottom of a greased 9×13 pan.
- In a small, microwaveable bowl, mix together the butter, chocolate chips and peanut butter chips. Microwave for 30 seconds, then remove and stir. Keep microwaving and stirring in 15 second intervals until the mixture is completely smooth.
- Add the sweetened condensed milk to the chocolate chip mixture and stir until completely combined, then pour it over the crust in the 9×13 pan.
- Take the second half of the cake mix batter, and drop it in spoonfuls over top.
- Bake for 20-25 minutes (until the top starts to turn a golden brown).
- Allow to cool completely before serving.
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