Cook and stir bacon in large skillet on medium heat until crisp.
Remove bacon from skillet with slotted spoon; drain on paper towels. Discard all but 1 Tbsp. drippings from skillet.
Add butter, onions and Brussels sprouts to reserved drippings in skillet; cook and stir on medium-high heat 1 to 2 min. or until Brussels sprouts are lightly browned.
Mix next 4 ingredients until blended; pour over sprouts. Cook 5 min. or until liquid is cooked off and sprouts are evenly glazed, stirring occasionally. Stir in bacon.
Spoon Brussels sprouts into serving bowl; top with nuts.