1Heat oven to 350º. Cook beef and onion in 10-inch skillet over medium heat 8 to 10 minutes, stirring occasionally, until brown; drain. Place beef mixture in ungreased 3-quart casserole.
2Cook bacon in same skillet over low heat 7 to 8 minutes, turning occasionally, until crisp and brown. Drain on paper towels; cool and crumble.
3Stir beans, brown sugar, ketchup and Worcestershire sauce into beef in casserole. Top with bacon. Cover and bake 40 to 45 minutes or until hot and bubbly.