Dude, chulent!
Seriously, I doubt too many people other than observant Jews are going to be doing their cooking that far in advance.
A few options that I’ve done for the Sabbath, other than variations on chulent (which I can post as well, if you don’t have a good recipe):
Split-Pea Soup
3 onions
4 stalks celery
1 head garlic
1 lb split peas (about 2 cups)
1 package beef bones
1 1/2 tablespoons salt
pepper to taste
Boiling water
Optional - 1-2 carrots
Roughly chop the onions, celery, and carrots if using. Remove papery skins from garlic cloves. Place in a pot, cover with water, bring to a boil, and simmer for 20-30 minutes. Puree (an immersion blender is good for this). Place with rest of ingredients in a crock pot, then fill with boiling water (this is sized for a 5.5 quart crock pot, so estimate for that volume if yours is bigger.) Cook on low. Makes an extremely hearty soup.
Yemenite-ish Soup
1 package beef bones
2 onions
2 carrots
2 stalks celery
5-10 cloves garlic, lightly smashed
1/4 cup ketchup
1 tablespoon salt
1/2 teaspoon black pepper
1 teaspoon turmeric
2 teaspoons cumin
1/4 cup white rice
Place in crock pot. Fill with boiling water. (As with above, this is for a 5.5 quart crock pot.) Cook on low for 24 hours.
Orizza (Moroccan chulent)
1 cup wheat berries (unground wheat kernels), soaked overnight
2 onions
3 T oil
1-2 T sugar
3 cloves garlic
1 large yam, cut in chunks
2 T paprika
1 T garlic powder
salt and pepper to taste (I like a lot of pepper here, as this is actually fairly sweet)
1 lb short ribs or other suitable chulent meat
2 cups water
Chop the onions, then saute until golden. Place all in crockpot, and cook on low.
Note that my crock pot is a relatively hot cooker, and it will simmer, bubbling away, on the ‘low’ setting. If yours is cooler, you might have to kick it up higher for the first couple of hours for any recipe, including those above.