These Cake Mix Cookie Bars are the kind of dessert you can throw together when you want something homemade without spending half the afternoon in the kitchen. A box of cake mix does most of the work, while eggs and melted butter turn it into a thick, soft cookie-style batter. Add chocolate chips for a classic finish, or change the mix-ins depending on what you have in the pantry.
The finished bars have lightly golden edges, a soft and chewy center, and plenty of chocolate in every bite. They are especially handy for bake sales, school treats, potlucks, or those evenings when a simple dessert sounds better than a complicated one.
What You Need
| Ingredient | Amount |
|---|---|
| Yellow cake mix | 1 box (15.25 ounces) |
| Unsalted butter, melted | 1/2 cup |
| Large eggs | 2 |
| Semi-sweet chocolate chips | 1 cup |
You can use another flavor of cake mix if you prefer. Chocolate, vanilla, funfetti, and even red velvet cake mix can work well with this basic method.
Also Read: Pumpkin Snickerdoodle Cookies
How to Make Cake Mix Cookie Bars
1. Prepare the Pan
Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking pan or line it with parchment paper, leaving a little overhang on the sides. The parchment makes it much easier to lift the cooled bars out before slicing.
2. Make the Cookie Dough
Add the cake mix, melted butter, and eggs to a large mixing bowl. Stir until everything comes together into a thick, sticky dough. Do not worry if the mixture looks much thicker than normal cake batter. That is exactly what you want for cookie bars.
3. Add the Chocolate Chips
Fold in the chocolate chips, keeping a small handful aside if you want to sprinkle a few over the top before baking. You can also add chopped walnuts, pecans, colorful sprinkles, or other baking chips at this stage.
4. Spread the Dough
Transfer the dough to the prepared pan and press it into an even layer. The dough can be quite sticky, so lightly dampening your hands or using a piece of parchment paper to press it down can make this step easier.
5. Bake
Bake for about 20 to 25 minutes, or until the edges are lightly golden and the center looks set. Try not to overbake them. The bars will continue to firm up as they cool, and taking them out while the middle is still soft helps keep that chewy texture.
6. Cool and Slice
Let the cookie bars cool completely in the pan before cutting. For cleaner slices, lift the bars out using the parchment paper and use a sharp knife to cut them into squares.
What You Can Do Better
- Do not overbake: This is the easiest way to lose the soft texture. Pull the bars from the oven when the edges are lightly golden and the middle is just set.
- Use melted butter: Butter gives the bars a richer flavor than oil and works particularly well with yellow or vanilla cake mix.
- Press the dough evenly: An uneven layer can leave some parts overbaked while thicker areas remain too soft.
- Let them cool: Cutting the bars while they are hot can make them fall apart. Give them time to firm up before slicing.
- Do not overload the mix-ins: Chocolate chips and extras are great, but adding too many can make the bars difficult to hold together.
Also Read: Apple Cheesecake Bars
Easy Variations
The basic recipe is more of a starting point than a strict rule. Try white chocolate chips with vanilla cake mix, peanut butter chips with yellow cake mix, or chocolate chips with chocolate cake mix. For a birthday-style dessert, use funfetti cake mix and colorful sprinkles. Chopped pecans or walnuts are also a good choice if you like a little crunch.
For a richer chocolate version, use chocolate cake mix and a mixture of semi-sweet and milk chocolate chips. If you want something seasonal, add a pinch of cinnamon to a spice cake mix and fold in white chocolate chips.
How to Store Them
Once completely cooled, keep the bars in an airtight container at room temperature for about 3 days. You can also refrigerate them if you prefer a firmer texture. For longer storage, wrap the individual bars well and freeze them in a freezer-safe container for up to 2 months. Let them thaw at room temperature before serving.
Recipe at a Glance
| Prep Time | 10 minutes |
|---|---|
| Cook Time | 20–25 minutes |
| Total Time | About 35 minutes |
| Yield | 16 bars |
| Pan Size | 9×13 inches |
| Category | Dessert |
Also Read: Shortbread Cookies
Nutritional Information
The following is an approximate estimate for one bar when the recipe is cut into 16 pieces. Actual nutrition will vary depending on the cake mix and chocolate chips used.
| Nutrient | Approximate Amount Per Bar |
|---|---|
| Calories | 220 |
| Total Fat | 11 g |
| Saturated Fat | 5 g |
| Carbohydrates | 29 g |
| Sugars | 17 g |
| Protein | 2 g |
| Sodium | 190 mg |
Also Read: Nutella Stuffed Cookies
Frequently Asked Questions
Can I use a different flavor of cake mix?
Yes. Yellow cake mix is a simple choice, but chocolate, vanilla, funfetti, spice, and red velvet cake mixes can all be used to create different versions of the bars.
Can I use oil instead of butter?
Yes. Vegetable or another neutral-flavored cooking oil can be used, although butter gives the bars a richer flavor.
Why are my cake mix cookie bars too dry?
They were probably baked for too long. Cake mix bars can go from soft to dry fairly quickly, so start checking them around the 20-minute mark.
Can I add nuts?
Absolutely. About 1/2 cup of chopped pecans or walnuts works well with the chocolate chips.
Do I need to refrigerate cake mix cookie bars?
No. They can be stored in an airtight container at room temperature for a few days. Refrigeration is optional if you prefer them firmer.
