- Trim and cut cauliflower into bite size pieces, wash with water still on. Peel and lightly crush the garlic.
- Mix oil, rosemary, salt, pepper and garlic together.
- Toss in cauliflower and place in a large casserole dish in one layer.
- Roast in a preheated oven at 450 degrees for 20 minutes; give a toss and bake for 10 more minutes.