I like to buy these large bags of broccoli florets from Sam's Club since we eat so much of it. To keep it from spoiling, I partially cook it all at once and freeze in ziplock bags for later. Then I can quickly grab a bag of broccoli from the freezer whenever I want it as a side dish or to add to a casserole. Saves precious time later!
One large bag of broccoli makes two 2-gallon zip lock bags full of frozen broccoli.
The next step? When cooking today, cook a bit more and freeze for another meal. When you will have a time crunch, there is something healthy ready to warm up in no time.