Crock Pot Broccoli Cheese Soup

10 oz. frozen, chopped broccoli, thawed
2 cups processed cheese, cubed
2 Tbsp. margarine
1 Tbsp. flour
2 cups cooked noodles
3 Tbsp. chopped onion
5 1/2 cups milk
salt to taste

Combine all ingredients (except pasta) into crock pot.
Cook on low for 4 hours, stirring occasionally.
Add pasta last and heat through.