Tip: Save yourself some time by using frozen broccoli and steaming it in the microwave. (momstown.ca)
I am sharing this cauliflower broccoli cheese made with frozen broccoli, frozen cauliflower and a cheese sauce infused with frozen basil, to encourage you to use food from your freezer more. (recipesfromapantry.com)
I would suggest fresh, but you could also boil frozen broccoli for 5 minutes or so, strain it and add to the recipe. (slimsanity.com)