1In 10-inch skillet, cook ground beef, 1 cup onions and the garlic over medium-high heat about 5 to 7 minutes, stirring occasionally, until beef is no longer pink. Drain, if necessary.
2In 3 1/2- to 4-quart slow cooker, place beef mixture, tomatoes, chili powder, cumin, Worcestershire sauce, salt and pepper; mix until well combined. Place hot dogs in slow cooker; cover with chili mixture.
3Cover; cook on High heat setting 2 hours or on Low heat setting 4 to 6 hours.
4Serve chili dogs in buns; top with onion and cheese.