I had a friend ask me if there was a way to use brownie mix,from a box, as a filling or icing. She wants to know if I can make the batter without the eggs and use it to fill or ice the top of a cake. I was kind of like eeww, but she thinks it would be great. Any ideas or suggestion or do you even think it is possible?
Thanks
I know exactly what's she is thinking! Raw brownie batter tastes awesome!! But I come from the raw cookie dough camp, too. 
I think it might be too runny, but maybe if you experimented with less water? I can actually see possibilities as a filling, not an icing.
There is flour in brownie mix. Why would anyone want to make a filling/frosting with uncooked flour in it ? I vote...don't bother.
I have a whole series of fillings/frostings based on raw cookie doughs (from chocolate chip to snickerdoodle to gingerbread) that contain uncooked flour. They are mostly an adaptation between the cookie recipe and American buttercream recipe, without the eggs and baking soda. They are the most requested of all my frosting/fillings.
I wouldn't use a brownie mix because it contains leavening, which is nasty when raw. But a scratch brownie recipe could be adapted to a frosting.
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