My husband and I loved fried cauliflower, but I really hate deep frying. I was very successful in getting breaded cauliflower nice and crispy in the oven.
Here is what you have to do: First, boil the cauliflower until it is tender. Drain and cool. Dip the cauliflower in egg and then toss in the breading of your choice. If you find the breading is not sticking, try dredging the cauliflower in flour before dipping it in the egg. This should give you a thicker egg coating that should help the breading adhere.
If you notice that the breaded cauliflower seems to have sesame seeds on it, that is because I used an Israeli breading mix that has sesame seeds in it. I added in some matzoh meal to the breading mix and added in some extra salt.
After breading the cauliflower, place the flowerets on a well-greased sheet pan and spray liberally with cooking spray. Bake at 400 degrees until brown and crispy.