the.com/coffee cake

means A sweet, crumb-topped cake meant to be eaten alongside a cup of coffee, not one that actually contains coffee as a flavor.

from The name dates to the practice, especially in northern European and American baking traditions, of making a simple sweet cake or bread specifically to serve with coffee at breaks or gatherings — the 'coffee' describes the occasion, not an ingredient. German kaffeekuchen and similar European streusel-topped cakes fed this tradition, and the term crossed into American English in roughly that spirit, cementing the custom of crumb-and-cinnamon cakes built for dunking and sipping rather than caffeinated flavor.