I needed to make a soup in the crock pot. You do have to saute veggies before you add them. I got 5 lbs of beans on sale and needed to do different things with them. If you don't want to add the last 3 ingredients, it still makes a good soup.
Saute the onion, carrots, and celery in the olive oil.
Dump the beans in crock pot; add the water and boullion. I cooked the beans on high for 4 hours and they were done. If you want to cook longer put on slow. My crock pot runs kinda hot so judge by your cooker.
Cook until you get home; you may need to add water later.
Add arugula, which has been minced fine, and Parmesan cheese for the last 15 minutes of cooking.