Slice mushrooms and chop onions.
Place ground beef, mushrooms, and onions in a large skillet and cook over medium heat stirring often until beef is no longer pink. Drain.
Drain spinach well.
Combine beef mixture, spinach, broth, canned soup, sour cream and Monterey Jack in a large bowl.
Spoon into slow cooker. Cover and cook on low for 4 hours.
Serve over No Yolks Broad Noodles.