Recipe: Whole roasted cauliflower with feta cheese sauce. This healthy whole roasted cauliflower makes a beautiful main or side dish that will wow your guests. Roasted Whole Cauliflower With Feta. Prep Time 10 minutes. I looked around for a good recipe for a whole oven roasted cauliflower but couldn’t find a recipe I believed would be great. Total Time 1 hour 40 minutes. If you are looking for a vegetarian alternative for a centerpiece roast, then this is a very good option! ½ cup olive oil. 3 to 4 tablespoons Dijon or other favorite mustard (I used a combination of Dijon and sweet mustard), divided use. January 19, 2018 by Kalle Leave a Comment. With whipped feta cheese and a zingy herb sauce, this is a cauliflower dish you’ll come back to again and again. Cook Time 1 hour 30 minutes.