*This recipe uses half of the box cake mix. I have not tested this exact recipe doubled. If you want to make the whole box, prepare it per the box instructions, and just add in some pecans and chocolate chips. Cook for 35-40 minutes. You can add some sour cream, but I don't guarantee that 2/3 of a cup will be the correct amount.
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This cake will have a denser texture as it is not being baked in an oven, which is a dry environment. It is closer to a pound cake consistency, if I had to compare it to a baked cake.