Bundt cake store?
Although not in LA, there is one in Thousand Oaks called "Nothing Bundt Cakes:"
We tried the chocolate and the lemon...nothing special. I was hoping for something very moist, with perhaps a divine filling. But they do a terrific decorating job for special occasions, so it makes a nice "gift." You can view their creations on their website.
Nothing Bundt Cakes
1610 Thousand Oaks Blvd. in Thousand Oaks
They have several other locations.