1. Cook broccoli according to package directions.
2. Drain and set aside. In 2 quart microwave safe casserole, melt butter.
3. Add onion; cover and cook on high until tender.
4. Add flour and blend well. Whisk in broth; cook on high for 4 to 6 minutes or until thickened and bubbly, stirring every 2 minutes.
5. Add remaining ingredients except noodles. Cook on high for 2 to 3 minutes or until heated through, stirring once.