Loaded Cake Mix Cookie Bars are made in under 25 minutes with a boxed white or yellow cake mix and filled with chocolate chips, peanut butter chips, and mini M&M’s. So delicious and easy to make!
Easy Loaded Cake Mix Cookie Bars (Family Favorite)
Hey everyone! Today I’m excited to share the recipe for my Loaded Cake Mix Cookie Bars which are incredibly easy to make, SO delicious, and the #1 most frequently requested dessert in our household.
These easy cake mix cookie bars are like a cookie and blondie in one, and loaded with chocolate chips, peanut butter chips, and miniature M&M’s.
They’re my go-to dessert whenever I want to make something quick and easy, and the delicious flavor won’t disappoint.
Kids will also love helping make these soft and chewy cookie bars and they’re such an easy way to use up leftover chocolate chips, candy, nuts, and other mix-ins in your pantry.
Keep reading for the full recipe and watch my easy video tutorial over here!
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Easy Loaded Cake Mix Cookie Bars
Try these Loaded Cake Mix Cookie Bars for an easy weekend dessert or take them to your next potluck with family and friends.
Everyone will love the soft, chewy texture of these cake mix cookie bars and the chocolate and peanut butter flavor combination is so delicious.
They only require just a few ingredients and the best part is you can easily switch up the flavor by changing the mix-ins.
They’re seriously such a breeze to whip together for parties or just an everyday treat and my boys always love helping choose the mix-ins.
Below I’ve included a ton of delicious mix-in ideas and all the ingredients and tools you’ll need to make these easy cake mix cookie bars.
Loaded Cake Mix Cookie Bars Mix-In Ideas:
These cake mix cookie bars are delicious using the original recipe with chocolate chips, peanut butter chips, and mini M&M’s, but feel free to switch it up depending on what ingredients you have in your pantry.
These cake mix cookie bars are also perfect for using up leftover candy after holidays or Halloween!
Here’s a list of delicious mix-in ideas:
- Chocolate chips
- Peanut butter chips
- White chocolate chips
- Caramel chips
- Butterscotch chips
- M&M’s
- Reese’s Pieces
- Caramels
- Nuts (peanuts, cashews, almonds, or walnuts)
- Shredded Coconut
- Chopped up Candy Bars (Reese’s, Snickers, Butterfinger, Kit Kat, Hershey bars etc.)
Loaded Cake Mix Cookie Bars Ingredients:
- Yellow or White Cake Mix
- Eggs
- Olive oil or vegetable oil
- Chocolate Chips
- Peanut Butter Chips
- Mini M&M’s
Kitchen Tools Needed For Loaded Cake Mix Cookie Bars:
- Electric Hand Mixer
- Large Glass Mixing Bowl
- Measuring Cups
- Measuring Spoons
- 13×9 Glass Baking Dish
- Rubber Spatula
- Cooling Rack
- Knife (for cutting bars)
How to Make Cake Mix Cookie Bars
To make these delicious cake mix cookie bars, it’s as simple as 1,2,3!
- Use an electric hand mixer to combine your cake mix, eggs, and oil in a large mixing bowl.
- Gently stir in your mix-ins including chocolate chips, peanut butter chips, and mini M&M’s.
- Spread your batter in a 13×9 Glass Baking Dish with a rubber spatula and bake in the oven until a light golden brown.
Helpful Tips for Spreading Your Batter
The batter for these cake mix cookie bars will be quite thick and it’s a little tricky to spread.
To make it easier to spread, you should definitely use this rubber spatula.
Because it’s non-stick, it smooths out the batter with ease, unlike using a regular spoon.
If you don’t have a rubber spatula, the next best option is to use your hands.
If you use your hands to spread the batter, one little trick is to slightly dampen your hands first, so that it won’t stick to the batter.
Easy Cake Mix Cookie Bars FAQ’s
How to Serve Your Cake Mix Cookie Bars
These cake mix cookie bars are delicious both warm or at room temperature, and can be enjoyed either by themselves or topped with a scoop of your favorite ice cream and a chocolate drizzle.
How to Store Leftover Cake Mix Cookie Bars
Store any leftovers in an airtight container or ziplock bag at room temperature for up to 1 week.
I actually prefer these the next day, as all the flavors taste better, and they’re perfectly soft and chewy.
Can I Freeze Cake Mix Cookie Bars?
Yes! You can freeze both baked and unbaked cake mix cookie bars.
To freeze baked cookie bars – After you have baked and cooled your bars, place in a freezer safe bag and freeze for up to 3 months. When ready to eat, thaw out on the counter
To freeze unbaked cookie bars – Prepare your batter as directed and place your covered casserole dish straight in the freezer. Once ready to bake, place the cookie bars in your preheated oven and bake for an additional 5 minutes, or until fully baked.
Can I Use A Different Kind of Cake Mix?
Yes, I prefer using a yellow or white cake mix for a more blondie style bar, but you can definitely use other cake mix flavors to switch it up. Chocolate, Strawberry, or Lemon would all be delicious – especially paired with different mix-ins!
Check out this post on How to Make Box Cake Better.
Here’s some more cake mix desserts to try:
- Cake Mix Donuts
- Glazed Lemon Cake Mix Cookies
- Red Velvet Cake Mix Cookies
- Cake Mix Pumpkin Spice Cookies
- Funfetti Cake Mix Cookies
- Caramel Spice Cake Mix Cookies
Easy Loaded Cake Mix Cookie Bars (Family Favorite)
Loaded Cake Mix Cookie Bars are made in under 25 minutes with a boxed white or yellow cake mix and filled with chocolate chips, peanut butter chips, and mini M&M’s. So delicious and easy to make!
- Prep Time: 5 minutes
- Cook Time: 20 minutes
- Total Time: 25 minutes
- Yield: 16 bars 1x
- Category: Dessert
- Method: Bake
- Cuisine: American
Ingredients
- 1 (15 oz) box of yellow or white cake mix
- 2 eggs, beaten
- 1/3 cup olive oil, canola oil, or vegetable oil
- 1/3 cup chocolate chips
- 1/3 cup peanut butter chips
- 1/3 cup miniature M&M’s
- (a few more chocolate chips, peanut butter chips, and M&M’s on top, if desired)
Instructions
- Preheat oven to 350 degrees and grease a 9×13 glass baking dish with non-stick cooking spray.
- In a large glass mixing bowl, combine cake mix, olive oil, and eggs using an electric hand mixer and mix until smooth and combined. The batter will be very thick.
- Gently fold in chocolate chips, peanut butter chips, and miniature M&M’s.
- Spread batter evenly in the dish using a rubber spatula. If needed, slightly wet hands and press until evenly spread.
- If desired, sprinkle the top with a few more chocolate chips, peanut butter chips, and M&M’s.
- Bake for 20-25 minutes or until a light golden brown and a toothpick comes out clean.
- Remove from oven and let cool on a cooling rack for 10 minutes.
- Serve warm as is or top with a scoop of ice cream and chocolate drizzle and enjoy!
Notes
How to Store Leftover Cake Mix Cookie Bars
Store any leftovers in an airtight container or ziplock bag at room temperature for up to 1 week.
I actually prefer these the next day, as all the flavors taste better, and they’re perfectly soft and chewy.
How to Freeze Cake Mix Cookie Bars
To freeze baked cookie bars – After you have baked and cooled your bars, place in a freezer safe bag and freeze for up to 3 months. When ready to eat, thaw out on the counter
To freeze unbaked cookie bars – Prepare your batter as directed and place your covered casserole dish straight in the freezer. Once ready to bake, place the cookie bars in your preheated oven and bake for an additional 5 minutes, or until fully baked.
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More Bars/Brownies You’ll Love:
- Peanut Butter Chocolate Chip Bars
- Peanut Butter Cheesecake Swirl Brownies
- Peanut Butter Truffle Brownies
- Triple Peanut Butter Oatmeal Bars
- Chocolate Chip Brookies
Hope you enjoy today’s recipe for Loaded Cake Mix Cookie Bars! Would you or someone in your family love these? What mix-ins would you add to your cake mix cookie bars? Let me know in the comments below!
Thanks for stopping by! – Cara
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These sound delightful!
Thank-you! Our family sure does love them! 🙂
These sound amazing!
Thank-you! They’re so easy too! 🙂