My children love it and prefer it to cholent.
Soak the gruenkern for several hours (In monsey you can buy the gruenkern at monsey glatt, wesley kosher, and rockland kosher)
Put the following in a crockpot:
8-12 cups of water (depending on the consistency you want)
1 peeled onion
1 Ringwurst (for those of polish lineage, that would be sold in your local kosher supermarket as a garlic ring or a kilebasa).
(beef ribs also make a nice meat alternative)
set heat to medium and cook overnight. Will be great for shabbos lunch.