A building panel includes a central core and a pair of opposed coating surfaces formed integrally with the core. The method of forming the building panel includes the application of a flowable, settable coating material to respective surfaces of at least two baffles (100), placing the baffles in a substantially parallel, spaced interrelationship, at least substantially filling the space between the two baffles (100) with a settable core material prior to setting of the core material, and allowing the core material and coating material to set.