Cook the bacon until crisp. In the meantime, add chicken stock, cream of chicken soup, hash browns, carrots, onion, 3 C broccoli and black pepper to slow cooker. When bacon is done, add 3/4# to slow cooker, reserving 1/4# for final garnish. Cover and turn your slow cooker on low for 8 hours.
Within the final 20-30 minutes of cooking, if you want a smooth soup, blend the ingredients and return to crockpot (see tips above). Add additional broccoli florets, 1-1/2C shredded cheddar cheese, and cream cheese to pot. Return lid and allow to cook on low 20 minutes.
To serve, ladle into soup bowls, sprinkle with a bit of bacon, additional shredded cheddar and green onions.