In a microwave oven, cook beef, onion and garlic on high for 3 minutes in a covered 2-qt.microwave-safe dish; stir to crumble meat.
Cover and cook for 3 minutes; drain.
Add the next six ingredients; cover and cook on high for 6 minutes.
Stir in the beans.
Cover and cook 4 minutes more.
Let stand 3-5 minutes.
If desired, serve over macaroni and top with cheese and onions.