Cook the chopped bacon in a skillet over medium heat until crisp. Remove the bacon and set it aside, leaving the drippings in the pan.
Add the beef cubes to the same skillet and brown on all sides. Sprinkle the flour over the beef and stir to coat.
Transfer the beef and bacon to the slow cooker. Add the pearl onions, carrots, mushrooms, and garlic.
In a bowl, whisk together the red wine, beef broth, tomato paste, thyme, bay leaves, salt, and pepper. Pour this mixture over the ingredients in the slow cooker.
Cover and cook on low for 8 hours until the beef is tender.
About 15 minutes before serving, cook the egg noodles in a pot of boiling water according to package directions. Drain the noodles.
Remove the bay leaves from the slow cooker. Serve the beef mixture over the egg noodles and top with the chopped parsley.