Cook broccoli in boiling water 4 minutes or until crisp-tender, and drain. Rinse with cold water; drain.
Heat oil in a large nonstick skillet over medium-high heat. Add bell peppers and red wine vinegar. Cover, reduce heat to medium, and cook 15 minutes or until peppers are tender, stirring frequently. Uncover; sprinkle with sugar. Increase heat to medium-high; cook 2 minutes or until liquid evaporates and bell peppers begin to brown, stirring constantly. Add broccoli; cook 2 minutes or until thoroughly heated, tossing to combine. Remove from heat, and stir in salt and black pepper.