*The blondies will look like they are not fully done because the center will be quite gooey, but that’s what you want! After about 30 minutes of cooling, they will be easy to cut using a serrated knife.
* If you do make your own cake mix, I used 3 cups of my homemade yellow cake mix. I have read some people have used a little more- 3 1/2 cups up to 4. I would gauge your mix by the dryness. Start with 3 cups…you can always add more!
Adapted from Sally's Baking Addiction