In large saucepot, cook ground chuck over medium-high heat 8 minutes or until browned, breaking up ground chuck with side of spoon; transfer to paper towel-lined plate. In same saucepot, cook bacon over medium heat 5 minutes or until crisp, stirring occasionally; with slotted spoon, transfer to separate paper towel-lined plate.

To drippings in saucepot, add onion; cook 4 minutes or until softened, stirring occasionally. Add garlic; cook 30 seconds, stirring occasionally. Add flour; cook 1 minute, whisking constantly. Add broth, cream and dry mustard; cook 2 minutes or until slightly thickened, whisking frequently. Add 1 cup Cheddar cheese, American cheese singles and ground chuck; reduce heat to medium-low and cook 10 minutes or until heated through and cheese melts. Makes about 6 quarts.