This is what I’ve come to call, for lack of a better term, a soffit crown molding.
This means that the projection of the crown molding (the part the extends from the wall out along the ceiling) has a structural element to it.
The soffit of a crown is quite often a plain, flat reveal. But this one I made with an ornate scroll molding in the soffit.
The entire buildup is made from eight separate pieces of molding and flat-stock.
And even though you may be tired of me saying this, I’m going to say it again…this is so easy to make!