Preheat oven 350.
Grease 2 qt. casserole dish.
Cook or defrost broccoli and drain. It does not need to be cooked through as it will cook through in final baking.
Mix all together except the croutons. Mix well. Pour into prepared casserole dish. Top with crushed croutons.
Bake approx. 45 minutes until bubbly.
notes:
If time allows, I like to saute the onions in the 1/4 c. butter and then mix into the rest of the mixture.