the.com/icebox cake

means A chilled dessert made by layering cookies or wafers with whipped cream (or pudding) and letting the fridge do the work until the layers soften into a cake-like texture.

from Named for the icebox — the literal ice-cooled cabinet that preceded electric refrigerators. The dessert dates to the early 20th century, when home cooks realized that stacking crisp wafers (often chocolate) with whipped cream and chilling the whole thing overnight would, through moisture alone, turn hard cookies tender and cake-like. No oven required, just time and cold — the name simply describes the appliance doing the cooking.