I had a Costco double chocolate chip muffin last weekend for the first time in multiple years, and it was so nostalgic that I needed more. But not 12 more. I tried to search on Google for a copycat recipe, but they all started from box cake and instant putting, which is just too much work for me.
Instead, I started from my ever-so-reliable moistest chocolate cake recipe, bumped up the flour by 1/4 c, and added 1/2 c of cocoa powder covered chocolate chips. I baked it in a parchment-lined loaf pan, since I don’t have larger muffin tins, but will say that it was an absolute hit. The loaf pan took over an hour to bake through, so I may try a cake pan next time.
Will definitely make again! Sorry no pics – disappeared into our bellies in a quick minute.
butter.city 
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