These babies are so easy to whip together! Whether you’re using a chocolate cake mix or a brownie mix, these bars are incredible with the soft chocolatey bottom and the peanut butter crumble top! Don’t be surprised if you eat the whole pan right out of the oven!
Preheat oven to 350 degrees. Line a 9×13 baking dish with foil or parchment paper and spray with nonstick cooking spray. Set aside.
In large bowl, mix cake mix, butter and egg together until well combined. Press into an even layer into prepared pan. Set aside.
Melt peanut butter and butter together in a microwave safe bowl until butter has melted completely and peanut butter has softened. Stir in brown sugar, oats and flour until oats and flour have been incorporated. Sprinkle over chocolate layer and gently press peanut butter crumble into the chocolate layer.
Top with chocolate chunks and bake 25-30 minutes or until a cake tester comes out clean. Enjoy warm or cool completely, remove bars from pan and cut into 24 even squares. Store in an airtight container.
Note: You can substitute the chocolate cake mix bottom for brownie batter.
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It was pretty tough to spread the thick bottom layer on foil with the foil shifting around. Also, there almost seemed to be not enough top layer to cover a 9×13, and the uncovered chocolate edges got crunchy. But they have a good taste and I’ll probably make them again. Next time I’ll spray the pan really well instead of dealing with runaway foil or parchment paper.
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kentuckywoman on 7.7.2010
Woohoo! These are great! They disappeared in minutes and were so easy to whip up. Thanks for the recipe!
barbg on 6.28.2010
Made these this weekend… a huge hit with everyone– and so easy! Thanks!