PREPARATION:

1. To steam broccoli, place steamer basket in large saucepan; add 1 inch of water. (Water should not touch bottom of basket.) Place spears in steamer. Separate onion slices into rings; place on broccoli. Cover. Bring to a boil over high heat; steam about 8 minutes or until broccoli is crisp-tender. Add water, as necessary, to prevent pan from boiling dry.
2. Uncover; place pepper rings on top. Cover; steam briefly until pepper rings brighten in color but still hold their shape. Remove from heat; transfer vegetables with slotted spoon to warm serving dish. Melt butter in small saucepan over medium heat; stir in vinegar and rosemary. Drizzle evenly over vegetables. Serve immediately.