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The recipe is finally here—GoGo’s Oatmeal Chocolate Chip Bars!!!

Named after my outstanding mother-in-law, whom we call GoGo, these bars are one of her specialties in the kitchen that everyone in her life knows and loves so very much! Growing up, my husband, Clayton, says that these oatmeal chocolate chip bars were a regular staple in their house and there was almost always a batch ready to be eaten at any given time. In fact, all of his high school friends know and love GoGo’s Oatmeal Chocolate Chip Bars and always rant and rave about how they loved them growing up! GoGo took them everywhere with her, and I completely understand why.
These chocolate chip bars are just about the easiest recipe to make, using limited ingredients and a box of yellow cake mix. It can be thrown together at any given time and taken to a friend in need of a little sweet treat, a potluck gathering or when hosting friends at your house.

While they are *fantastic* when warm or at room temperature, they are (arguably) better kept in the freezer and eaten straight out of there — a Snodgrass family secret! We carve them into squares, toss them in a ziplock and leave them in the freezer for a sweet treat whenever your heart desires or easily warmed up if that is what you prefer. But, if you do try our freezer trick, definitely let me know what you think!
want to make more of GoGo’s recipes? try these!

GoGo’s Oatmeal Chocolate Chip Bars
Ingredients
- 1 [15-ounce] box Miss Jones vanilla cake mix *use my code 20DEFINED for 20% off
- ½ cup avocado oil
- ¼ cup water
- 1 large egg
- 1 stick butter, softened
- ½ cup packed Miss Jones Smart Sugar *you can also use regular brown sugar here
- 2 cups old-fashioned rolled oats *do not use quick oats
- 1 [8-ounce] package of semi-sweet chocolate chips
Instructions
- Preheat the oven to 325 degrees and line a 9×13 metal baking pan with parchment paper.
- In a large mixing bowl with a paddle attachment, combine the avocado oil, water, egg, softened butter, smart sugar (or brown sugar if using) and only ½ of the bag of the vanilla cake mix. Mix at medium speed until well combined.
- Add the remaining cake mix and the oats. Mix over medium speed once more until just combined.
- Fold in the chocolate chips. Transfer to the parchment-lined baking pan and spread into an even layer using a rubber spatula.
- Transfer to the preheated oven and bake until the center has just set (you want it to still be pretty soft in the center so try to not over cook)– mine takes exactly 30 minutes. It might not look completely done, but once it has time to set it will be perfect and still chewy in the center.Allow the bars to cool completely, at least 30 more minutes, before lifting the parchment paper out of the baking dish and carving into squares.
Notes
- Quick oats does not work as an alternative in this recipe!
- 1:1 substitute for brown sugar
- I do not like plain coconut sugar as a sub in this recipe
- I have tried grain-free boxed yellow cake mix as an alternative and it did not work the same.
Nutrition information is automatically calculated, so should only be used as an approximation.




How long do these last? And how should they be stored?
I’d say they last about 5 days stored in an air-tight container. But we love freezing them! I carve into squares and store in the freezer and eat them frozen. DELISH!!
These are amazing. Has anyone ever added peanut butter? Maybe in place of the butter?
You’d likely still need regular butter here but let us know if you try this out!
SO GOOD! Added the tiniest splash of almond extract and sprinkled sea salt on top and was mind blowing
If you’re like me and entirely missed all of Alex’s ‘don’t use quick oats’ warnings until it was too late and are now in the comments hoping for a miracle, don’t fret! I used quick oats and added an extra egg, covered the pan and baked as suggested. At the end, I baked for about 5 more minutes without the foil to let them brown on top. They’re a chewier and thicker version, but still just as tasty! Follow Alex’s directions, but if you didn’t, you’ll be okay!
Thank you so much for sharing this!! Glad you were able to make it work and excited for you to try again with old-fashioned oats.
Can you use coconut oil instead?
yes that is just fine!
How long do I wait to slice . The middle is still mushy . Is that normal ? Or do I cook longer ?
You will want to leave them in the pan for at least 30 minutes to cool then lift out using the parchment paper then slice. Cooling in the pan will allow the bars to continue to bake slightly and make it easier to cut.
Can regular coconut sugar be subbed for the miss Jones smart sugar? Can’t wait to make these. Thanks!!
These are a new favorite! So easy to make gluten free and they are delicious! I only had a glass pan so I added five minutes to the time. Thank you for sharing GOGO! You’ll be famous in Detroit now too!
What gluten free cake mix did you use??
Yum! We baked them in a 9×13 glass pan lined with parchment paper for 38 minutes and they’re perfect. I usually don’t like frozen chocolate or baked goods but we put half the batch in the freezer after they were cut and I agree- they’re best frozen! Thanks for sharing 🤗
hi there, I love that mixing bowl with paddles. Where did you find that?
It is a Nutrimill Mixer!
Putting these in the freezer is a GAME CHANGER. So good omg
Hi! How do I make these if I don’t have yellow cake mix?