Peanut Brittle Crunch Cake

People who grew up in San Francisco remember being taken as kids to Blum’s and have fond recollections of the restaurant’s signature Caramel Crunch Cake.

Famous for its chocolates, Blum’s displayed rows of big, fluffy cakes to choose from; Caramel Crunch Cake was the best-known. This version, loosely suggested by a recipe of Chuck Williams (the founder of Williams-Sonoma), is true to the spirit of Blum’s but different in details: The original was split into layers and lavishly fille