Compound butter is simply butter with an added flavor or two mixed in. It's not just like buttering an item and then adding a sprinkle of the flavor - compound butter becomes a unique flavor unto itself. You can put these on pastries, meat, pasta - anything you like.
Compound butters build on everything we love about butter. That rich and creamy base has been given a savory upgrade. This Bacon Onion Butter has taken rich smooth butter and fortified it with crisp bacon crumbles, caramelized onions, and a savory hint of Worcestershire sauce.