Boil florets in salted water for 7-10 minutes until tender.
Pour milk into a pan, bring to boil, then simmer while adding flour, and 3/4 of the cheese.
Chop bacon finely and add to cheese sauce mixture, along with minced garlic and nutmeg.
Place broccoli in 9x9 in casserole dish, pour over cheese sauce, then tear stale bread into thumb size pieces and place on top of broccoli and mixture along with the rest of the cheese, pour a little olve oil over the top of this to make the bread crispy.
Bake in the oven at 350 for 25-35 minutes or until golden brown on top.