Add oil to a large Dutch Oven over medium heat. Sprinkle the flour over the meat and toss to evenly coat cubes with flour. Brown half of the coated meat in hot oil. Remove from pan. Brown the remaining meat and remove. Set aside.
In the same pan, brown the onion and garlic, adding more oil, if necessary. Drain off any excess fat. Return all meat to the pot. Stir in the broth, bay leaf, salt, and pepper. Bring to a boil; reduce heat. Simmer, covered, for 1-1/2 to 2 hours or until meat is tender.
When meat is tender, remove with a slotted spoon and set aside to cool briefly. In the meantime, stir noodles into broth. Bring to a boil; reduce heat to low. Shred beef and add back to pot with noodles. Cook, uncovered, for about 30 minutes or until noodles are tender and mixture is thick. Add additional broth or water if necessary (if noodles are absorbing it all). Add salt and/or pepper if needed. Remove bay leaf.