Make multipurpose cake crumbs from your wedding cake to add to a frosted cake for texture, or to make these Cake Crumb Cookies.
Preheat the oven to 350 degrees.
In the bowl of a food processor, pulse the cubed cake a few times until finely crumbled. Reserve 1 ½ cups and reserve the rest for later use.
Combine the butter, sugars, egg, extract, and salt until well combined. In another bowl, combine the baking soda, flour, and cake crumbs. Combine and chill the dough, then scoop out onto a silicone or parchment-lined baking sheet. Bake in for 10-12 minutes or until golden brown.