Slow Cooker Broccoli Chicken Soup

lbs chicken tenderloins

broccoli heads broccoli florets , about 1 1/2 lbs

large carrot

celery

medium onion

chicken base ( I used better than bouillon)

water, more if you like a runnier soup

heavy cream

seasoned salt or (¼ onion powder, ¼ garlic powder, ¼ salt, ¼ pepper)

cornstarch

olive oil