I also love those Costco muffins - they have blueberry, chocolate chip, and another flavor in one package. They come 12 to a pack, which is too much for my family, but these things are about 3 regular sized muffins rolled into one.

I never had the cake, DC, but it sounds delicious.

Now I sound like a pimp for Costco, but ya know what else is OUTSTANDING from them? Their rotisserie chicken - $5 and it is the most succulent bird you will ever have. Not a "guilty" pleasure, but a treat nevertheless.