Combine all Caesar oil ingredients and stir together. Let it sit at room temperature for 30 minutes.
Preheat the oven to 375 degrees F.
Prepare the cauliflower by removing the large green outer leaves. Trim the base by cutting the stem flush with the bottom of the cauliflower head.
Place cauliflower on a cutting board, stem side down. With a large knife, make 1 ½” cauliflower steak slices and place on a sheet pan.
Spoon the Caesar dipping oil over each cauliflower steak until it is nicely coated; you will have extra oil left over.
Place the sheet pan in the preheated oven and roast for 50-60 minutes, or until nicely browned.
Enjoy hot out of the oven, room temperature, or even cold!