There is the mark of Peeter Stas on the back of the copper panel, as well as a date of 1608.
Ertz 2008-10 lists a close replica on copper that could be autograph and that was formerly in an Antwerp collection; apparently there's a photo at the Witt.
Werche doesn't think this was done with Jan's assistance and I don't see it either. The foreground vegetation is thick, not fussy; the fruits & table stuff not particularly detailed; the background seems to lack his coloring. So this is probably a non-collaboration.