Classic Sloppy Joes

Heat oil in large skillet on medium heat. Add onions and green peppers; cook 5 min., stirring frequently. Crumble meat into skillet; cook 10 min. or until evenly browned, stirring frequently.

Drain meat mixture; return to skillet. Add all remaining ingredients except buns; mix well. Simmer on medium-low heat 10 min. or until slightly thickened, stirring occasionally.

Spoon meat mixture into buns just before serving.