Mix ingredients: Cook and stir ground beef, onion, and garlic in 3-quart saucepan until hamburger is light brown; drain. Stir in tomatoes (with liquid), celery, chili powder, salt, sugar, Worcestershire sauce, and red pepper flakes. Heat to boiling; reduce heat. Cover and simmer 1 hour.

Finish: Stir in beans. Heat to boiling; reduce heat. Simmer uncovered until hot (~15 min.). For thicker chili, continue simmering, stirring occasionally until desired consistency is reached.