Simple and delicious side dish, snack or appetizer.
I tested this several times with different flavors, so what I would like to suggest is do not put bread crumbs over the cauliflower, right after you mixed ranch or any other sauce that you'd like to use it. Instead, dip each cauliflower floret in the breadcrumbs and try to coat it well before baking. If you add all the breadcrumbs on top of ranch coated cauliflower, then the breadcrumbs going to separate completely.
You can prepare cauliflower florets ahead, and before baking just coat them with breadcrumbs.
You could toast breadcrumbs before dipping the cauliflower florets in just by adding a bit of olive oil in the pan and heating it, then toasting breadcrumbs just for 20-30 seconds, take it off on the paper towel before they get a deeper color. You don't want to burn it, just lightly toast. This brings even deeper flavor and amazingly crunchy cauliflower. I did not do that for this recipe, but I have done it in the past.