Fideos with Pasilla Chiles, Avocado, and Crema

A nice, tasty meal.

• My pasillas were moldy (argh!) and then I found my guajillos were moldy (oh no!). So I used anchos.
• I forgot to stir in the crema (aka crème fraîche) so I just blopped it on top and we stirred it in at the table.
• I completely forgot the avocado, which I'd set aside just for this.
• The recipe is meant for four, but two of us ate it all as a one-dish meal. And enjoyed it very much.

Will definitely try this again when I've restocked my dried chiles.