Ranch Roasted Cauliflower with Parmesan and garlic. This is so easy to make - ranch dressing, cauliflower florets, butter, garlic, s & p and Parmesan cheese. Bake in the oven for 35 to 45 minutes and you have a subtly sweet and deliciously garlicky low-carb side dish. You won't miss white potatoes with veggies like this! So yummy! So easy!