Great recipe! I followed the suggestion of another reviewer and added a little more milk. I also topped with shredded cheddar for the last 15 minutes. The only change I may make next time is to chop the broccoli finer. The brand I bought had rather large pieces for a casserole.
Easy and delicious. Two things I changed about the preparation were I sauteed the onion before I mixed it in and I put a tad more milk than just 1/4 of a cup. Came out much better the second time with these changes.