Spray 3 1/2- to 4-quart slow cooker with cooking spray. In 12-inch skillet, cook beef over medium heat 5 minutes, stirring occasionally. Add onion, carrots and garlic. Cook 3 to 5 minutes longer, stirring occasionally, until beef is thoroughly cooked; drain.
In slow cooker, stir together beef mixture, potatoes, cooking sauce and broth.
Cover; cook on Low heat setting 3 to 4 hours or until potatoes are tender. Stir in 1 1/2 cups cheese. Cover; cook 10 minutes longer or just until cheese is melted.
Top individual servings with additional cheese, pickles, ketchup and mustard.