There are tutorials on how to contribute to recalbox, how to compile recalbox. If you're a dev, you should be able to understand and go through it.
https://github.com/recalbox/recalbox-os/wiki/recalboxOS-detailed-%28EN%29
https://github.com/recalbox/recalbox-os/wiki/Recalbox-development---basics-%28EN%29
https://github.com/recalbox/recalbox-os/wiki/Compilation-&-Modifications-(EN)
But as you should already know, recalbox is a full os, not using raspbian etc., and built from scratch. And the recalbox team always ship a full os, not just some abitrary binaries.
Short answer: No, there is no "simple" way