It can be done; I've done it before! But you'll have to do it as a (take a deep breath here)
partial mash. My Hop Rod Rye clone was an extract with grains.
It's not that bad.
I just threw the flaked rye into my steeping bag along with my cracked specialty grains and placed it into ~2 gals of water
and about a cup of DME tossed in. I brought the water temperature up to ~100oF for ~10 mins. Then I raised it to ~120-125oF for ~30-45 to help break the proteins up. After that, I brought the grains up to ~150 for ~30 mins., the removed the grain bag and boiled as usual.
Somebody else may have a better method. Yes, it adds time to your brew day. But that gives you extra time to relax, not worry and have more homebrews!
:cross:
I plan to brew our 666 beer (whatever we end up calling it) the first weekend in March. As for converting this entire recipe, I'll try and work on it, but I'm betting some minds greater than mine will come through!